TEXAS INSTRUMENTS PTH03060Y Technical data

(25,4 mm x 15,75 mm)

NOMINAL SIZE
1 in. x 0.62 in

查询PTH05060Y供应商

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

10-A NON-ISOLATED DDR/QDR

MEMORY BUS TERMINATION MODULES

FEATURES

• VTTBus Termination Output • 57 W/in3Power Density
(Output Tracks the System V

• 10 A Output Current UL/cUL60950, EN60950, VDE

• 3.3-V, 5-V or 12-V Input Voltage • Point-of-Load Alliance (POLA™) Compatible

• DDR and QDR Compatible

• On/Off Inhibit (for VTTStandby)

• Undervoltage Lockout

• Operating Temperature: –40°Cto85°C

• Efficiencies up to 91%

• Output Overcurrent Protection (Non-Latching,

Auto-Reset)

DESCRIPTION

The PTHxx060Y are a series of ready-to-use switching regulator modules from Texas Instruments designed
specifically for bus termination in DDR and QDR memory applications. Operating from either a 3.3-V, 5-V or 12-V
input, the modules generate a VTToutput that will source or sink up to 10 A of current to accurately track their
V

input. VTTis the required bus termination supply voltage, and V

REF

and chipset bus receiver comparators. V

Both the PTHxx060Y series employs an actively switched synchronous rectifier output to provide state-of-the-art
stepdown switching conversion. The products are small in size (1 in × 0.62 in), and are an ideal choice where
space, performance, and high efficiency are desired, along with the convenience of a ready-to-use module.

Operating features include an on/off inhibit and output over-current protection (source mode only). The on/off
inhibit feature allows the VTTbus to be turned off to save power in a standby mode of operation. To ensure tight
load regulation, an output remote sense is also provided. Package options include both throughhole and surface
mount configurations.

REF

)

is usually set to half the V

REF

• Safety Agency Approvals:

is the reference voltage for the memory

REF

power supply voltage.

DDQ

V

IN

V

DDQ

1 k
1 %

1 k
1 %

C

IN

(Required)

Q

1

Standby

GND

CIN = Required Capacitor; 330µF (3.3 ± 5 V Input), 560 µF (12 V Input).
Co

= Required Low-ESR Electrolyitic Capacitor; 470 µF (3.3 ± 5 V Input), 940 µF (12 V Input).

1

= Ceramic Capacitance for Optimum Response to a 3 A (+ 1.5 A) Load Transient; 200 µF (3.3 ± 5 V Input), 400 µF (12 V Input).

Co

2

Co

= Distributed hf-Ceramic Decoupling Capacitors for VTT bus; as Recommended for DDR Memory Applications.

n

BSS138
(Optional)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

POLA is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

STANDARD APPLICATION

1

2

10 9 8

PTHxx060Y

(Top View)

3

7

6

54

Co
Low−ESR
(Required)

Co

1

Ceramic
(Optional)

V

REF

V

TT

Co

n

hf−Ceramic

V

TT

Termination Island

2

SSTL−2

Bus

Copyright © 2004–2005, Texas Instruments Incorporated

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

ORDERING INFORMATION

PTHXX060Y (Base Part Number)

Input Voltage Part Number

PTH03060YAH Horizontal T/H Yes

3.3 V PTH03060YAS Standard SMD No

PTH03060YAZ Optional SMD Yes

PTH05060YAH Horizontal T/H Yes

5 V PTH05060YAS Standard SMD No

PTH05060YAZ Optional SMD Yes

PTH12060YAH Horizontal T/H Yes

12 V PTH12060YAS Standard SMD No

PTH12060YAZ Optional SMD Yes

(1) Add T to end of part number for tape and reel on SMD packages only.
(2) Reference the applicable package reference drawing for the dimensions and PC board layout.
(3) Lead (Pb) –free option specifies Sn/Ag pin solder material.
(4) Standard option specifies 63/37, Sn/Pb pin solder material.

(1)

DESCRIPTION Pb – free and Mechanical Package

RoHS

(4)

(4)

(4)

(2)

(3)

EUW

EUY

(3)

(3)

EUY

EUW

EUY

(3)

(3)

EUY

EUW

EUY

(3)

EUY

ENVIRONMENTAL AND ABSOLUTE MAXIMUM RATINGS

voltages are with respect to GND

UNIT

V

T

T

T

T

(1) For operation below 0°C, the external capacitors must have stable characteristics, use either a low ESR tantalum, Os-Con, or ceramic

(2) During soldering of package version, do not elevate peak temperature of the module, pins or internal components above the stated

Control input voltage –0.3 V to Vin+03 V

REF

Operating temperature Over VINrange –40°Cto85°C

A

range

Wave solder temperature Surface temperature of module body or pins PTHXX060YAH 260°C

wave

Solder reflow temperature Surface temperature of module body or pins

reflow

Storage temperature –40°Cto125°C

s

(5 seconds)

PTHXX060YAS 235°C

PTHXX060YAZ 260°C

Mechanical shock Per Mil-STD-883D, Method 2002.3 1 msec, 1/2 Sine, mounted 500 G

Mechanical vibration Mil-STD-883D, Method 2007.2 20-2000 Hz 20 G

Weight 3.7 grams

Flammability Meets UL 94V-O

capacitor.

maximum.

(1)

(2)

(2)

(2)

2

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

ELECTRICAL SPECIFICATIONS

TA=25°C; nominal VIN;V

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

I

O

V

IN

∆V

REF

|V

TT–VREF

η Efficiency I

V

r

trip Overcurrent threshold Reset, followed by auto recovery 20 A

I

o

t

tr

V

tr

UVLO Under-voltage lockout

V

IH

V

IL

I

inhibit Pin to GND 130 µA

IL

inh Input standby current Inhibit control (pin 4) to GND 10 mA

I

IN

f

s

C

IN

CO1, CO2 External output capacitance PTH03060Y/PTH05060Y 200

MTBF Reliability Per Bellcore TR-332 50 % stress, T

Output current Over ∆V

Input voltage range Over IOrange PTH05060Y 4.5 5.5 V

Tracking range for V

| Tracking tolerance to V

VoRipple (pk-pk) 20 MHz bandwidth 20 mVpp

Load transient response

Inhibit control (pin 4) V
Input high voltage

Inhibit control (pin 4) –0.2 0.6
Input low voltage

Inhibit control (pin 4)
Input low curent

Switching frequency Over VINand IOranges kHz

External input capacitance µF

=1.25V;CIN,CO1, and CO2 = typical values; and IO=IOmax (unless otherwise stated)

REF

range Continuous 0 ±10

REF

PTH03060Y 2.95 3.65

PTH12060Y 10.8 13.2

REF

REF

Over line, load and temperature –10 10 mV

0.55 1.8 V

PTH03060Y 86%

= 8 A PTH05060Y 86%

o

PTH12060Y 83%

15 A/µs load step, from:
–1.5 A to 1.5 A

Recovery time 30 µsec

VOover/undershoot 25 40 mV

PTH03060Y 2.45 2.8

Increasing PTH05060Y 4.3 4.45 V

V

IN

PTH12060Y 9.5 10.4

PTH03060Y 2.0 2.40

Dncreasing PTH05060Y 3.4 3.7 V

V

IN

PTH12060Y 8.8 9

–0.5 Open

IN

Referenced to GND

PTH03060Y/PTH05060Y 250 300 350

PTH12060Y 200 250 300

PTH03060Y/PTH05060Y 330

(3)

PTH12060Y 560

Capacitance value: Nonceramic PTH03060Y/PTH05060Y 470

PTH12060Y 940

Capacitance value: Ceramic µF

PTH12060Y 400

Equuivanent series resistance (non-ceramic) 4

=40°C, ground benign 6

A

(4)

(4)

(6)

(1)

(2)

(5)

5500

(5)

5500

(4)

300

(4)

600

A

V

V

µF

mΩ

6

Hrs

10

(1) Rating is conditional on the module being directly soldered to a 4-layer PCB with 1 oz. copper. See the SOA curves or contact the

factory for appropriate derating.

(2) This control pin has an internal pull-up to the input voltage VIN. If it is left open-circuit the module will operate when input power is

applied. A small low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application
note.

(3) An input capacitor is required for proper operation. The capacitor must be rated for a minimum of 300 mA rms (750 mA rms for 12-V

input) of ripple current.

(4) The minimum value of external output capacitance value ensures that VTT meets the specified transient performance requirements for

the memory bus terminations. Lower values of capacitance may be possible when the measured peak change in output current is
consistently less than 3 A.

(5) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the capacitor application notes

for further guidance.

(6) This is the typcial ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values

to calculate.

3

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

TERMINAL

NAME NO.

V

IN

GND 1, 7

V

REF

V

TT

VoSense 5

Inhibit 3

N/C 4, 9, 10 No connect

DESCRIPTION

2 The positive input voltage power node to the module, which is referenced to common GND.

This is the common ground connection for the VINand VTTpower connections. It is also the 0-VDC reference
for the control inputs.

The module senses the voltage at this input to regulate the output voltage, VTT. The voltage at V
the reference voltage for the system bus receiver comparators. It is normally set to precisely half the bus

8 driver supply voltage (V

V

pin should not exceed 500 Ω. See the Typical DDR Application Diagram in the Application Information

REF

section for reference.

This is the regulated power output from the module with respect to the GND node, and the tracking
termination supply for the application data and address buses. It is precisely regulated to the voltage applied

6

to the module's V
module. Once active it will track the voltage applied at V

The sense input allows the regulation circuit to compensate for voltage drop between the module and the
load. For optimal voltage accuracy VoSense should be connected to VTT.

The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a low-level
ground signal to this input turns off the output voltage, VTT. Although the module is inhibited, a voltage, V
will be present at the output terminals, fed through the DDR memory. When the Inhibit is active, the input
current drawn by the regulator is significantly reduced. If the Inhibit pin is left open circuit, the module will
produce an output whenever a valid input source is applied. See the Typical DDR Application Diagram in the
Application Information section for reference.

Terminal Functions

÷ 2), using a resistor divider. The Thevenin impedance of the network driving the

DDQ

input, and is active active about 20 ms after a valid input source is applied to the

REF

REF

.

REF

is also

DDQ

1

7

PTHXX060

(Top View)

10 9 8

2

6

543

4

0

1

2

3

4

2468100

IL − Load Current − A

VIN = 3.3 V

VIN = 12 V

VIN = 5 V

− Power Dissipation − W
P

D

20

30

40

50

60

70

80

90

400 LFM

200 LFM

100 LFM

Nat Cinv

VIN = 12 V

24680

I

L

− Load Current − A

10

T

A

− Ambient Temperature −

5

C

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

10 0

90

80

70

Efficiency − %

60

50

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

TYPICAL CHARACTERISTICS (V

=1.25 V)

REF

(1)(2)

EFFICIENCY OUTPUT RIPPLE POWER DISSIPATION

vs vs vs

LOAD CURRENT LOAD CURRENT LOAD CURRENT

Output Ripple − mV

60

50

40

30

20

10

VIN = 5 V

0

2

− Load Current − A

I

L

VIN = 3.3 V

VIN = 12 V

46 8100

VIN = 5 V

2468100

VIN = 3.3 V

VIN = 12 V

IL − Load Current − A

Figure 1. Figure 2. Figure 3.

PTH03060Y/PTH05060Y AT PTH12060Y ONLY; VIN=12V

NOMINAL V

TEMPERATURE DERATING vs LOAD CURRENT

IN

TEMPERATURE DERATING

vs LOAD CURRENT

90

80

C

5

70

60

50

40

− Ambient Temperature −
A

T

30

20

Nat Cinv

200 LFM

100 LFM

400 LFM

2468100

IL − Load Current − A

Figure 4. Figure 5.

(1) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the

converter. Applies to Figure 1, Figure 2, and Figure 3.

(2) The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum

operating temperatures. Derating limits apply to modules soldered directly to a 4 in x 4 in double-sided PCB with 1 oz. copper. For
surface mount packages (AS and AZ suffix), multiple vias (plated through holes) are required to add thermal paths around the power
pins. Please refer to the mechanical specification for more information. Applies to Figure 4, and Figure 5.

5

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

TYPICAL CHARACTERISTICS

TRANSIENT PERFORMANCE FOR ∆3-A LOAD CHANGE

PTH03060Y/PTH05060Y: SOURCE-SINK-SOURCE PTH12060Y: SOURCE-SINK-SOURCE TRANSIENT

TRANSIENT

50 ms/div

VTT − V

(50 mV/div)

(52A/div)

I

TT

REF

50 ms/div

VTT − V

(50 mV/div)

(2A/div)

I

TT

REF

Figure 6. Figure 7.

6

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

Typical DDR Application Diagram

Auto-Track

= 5V

V

I

470 µF

+

220 µF

V

I

Inhibit ++

47 µF

V

I

Inhibit +

47 µF

APPLICATION INFORMATION

+SenseMargin ±

PTH05010W

VDDQ I/O Memory

5.51 kΩ

PTH05050Y

DDR Termination

+V

+V

V

ADJ

V

REF

O

2 ×

330 µF

TT

2 ×

330 µF

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

V

= 1.8 V

DDQ

2 ×

22 µF

2 ×

22 µF

VTT= 0.9 V

1 kΩ

1 kΩ

DDRII/

QDRII

UDG−05096

CAPACITOR RECOMMENDATIONS FOR THE PTH03060Y AND PTH05060Y DDR POWER
MODULES (3.3-V/5-V OPTION)

Input Capacitor

The recommended input capacitor(s) is determined by the 330 µF
minimum ripple current rating.

Ripple current and less than 160 mΩ equivalent series resistance (ESR) values are the major considerations,
along with temperature, when designing with different types of capacitors. Unlike polymer tantalum, regular
tantalum capacitors have a recommended minimum voltage rating of 2 × (maximum DC voltage + AC ripple).
This is standard practice to insure reliability.

For improved ripple reduction on the input bus, ceramic capacitors may be substituted for electrolytic types using
the minimum required capacitance.

Output Capacitors

For applications with load transients (sudden changes in load current), regulator response will benefit from
external output capacitance. The recommended output capacitance of 470 µF will allow the module to meet its
transient response specification (see Electrical Specifications table). For most applications, a high quality
computer-grade aluminum electrolytic capacitor is adequate. These capacitors provide decoupling over the
frequency range, 2 kHz to 150 kHz, and are suitable when ambient temperatures are above 0°C. For operation
below 0°C tantalum, ceramic or Os-Con type capacitors are recommended. When using one or more
non-ceramic capacitors, the calculated equivalent ESR should be no lower than 4 mΩ (7 mΩ using the
manufacturer's maximum ESR for a single capacitor). A list of preferred low-ESR type capacitors are identified in

Table 1.

(1)

minimum capacitance and 300 mArms

7

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

APPLICATION INFORMATION (continued)

Ceramic Capacitors

Above 150 kHz the performance of aluminum electrolytic capacitors becomes less effective. To further improve
the reflected input ripple current or the output transient response. Multilayer ceramic capacitors have very low
ESR and their resonant frequency higher than the bandwidth of the regulator. They can be used to reduce the
reflected ripple current at the input as well as improve the transient response of the output. When used on the
output their combined ESR is not critical as long as the total value of ceramic capacitance does not exceed
300 µF. Also, to prevent the formation of local resonances, do not place more than five identical ceramic
capacitors in parallel with values of 10 µF or greater.

Tantalum Capacitors

Tantalum type capacitors can be used at both the input and output, and are recommended for applications where
the ambient operating temperature can be less than 0°C. The AVX TPS, Sprague 593D/594/595 and Kemet
T495/T510 capacitor series are suggested over many other tantalum types due to their higher rated surge, power
dissipation, and ripple current capability. As a caution many general purpose tantalum capacitors have
considerably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are
also less reliable when determining their power dissipation and surge current rating. Tantalum capacitors that do
not have a stated ESR or surge current rating are not recommended for power applications.

When specifying Os-Con and polymer tantalum capacitors for the output, the minimum ESR limit will be
encountered well before the maximum capacitance value is reached.

Capacitor Table

Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple

current (rms) ratings. The recommended number of capacitors required at both the input and output buses is
identified for each capacitor type.

This is not an extensive capacitor list. Capacitors from other vendors are available with comparable
specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical
parameters necessary to insure both optimum regulator performance and long capacitor life.

Table 1. Input/Output Capacitors

Capacitor Characteristics Quantity

Capacitor Vendor, Vendor

Type/Series (Style) Part Number

Panasonic, Aluminum

FC (Radial) 10 470 0.117 555 8×11,5 1 1 EEUFC1A471

FK (SMD) 10 470 0.160 600 8×10,2 1 1 EEVFK1A471P

FC (SMD) 10 470 0.150 670 10×10,2 1 1 EEVFC1A471P

United Chemi-Con

PXA, Poly-Aluminum (SMD) 10 470 0.012 5300 10×12,2 1 ≤1 PXA10VC471MJ12TP

PS, Poly-Aluminum (Radial) 10 470 0.012 5300 8×12,2 1 ≤1 10PS470MJ12

LXZ, Aluminum (Radial) 10 470 0.120 555 8×12 1 1 LXZ10VB471M8X12LL

Nichicon Aluminum

WG (SMD) 10 470 0.150 670 10×10 1 1 UWG1A471MNR1GS

HD (Radial) 10 470 0.072 760 8×11.5 1 1 UHD1A471MPR

PM (Radial) 16 330 0.120 625 10×12,5 1 2 UPM1C331MPH6

(1) Capacitor Supplier Verification

Please verify availability of capacitors identified in this table. Capacitor suppliers may recommend alternative part numbers because of
limited availability or obsolete products. In some instances, the capacitor product life cycle may be in decline and have short-term
consideration for obsolescence.

RoHS, Lead-free and Material Details

Please consult capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process
requirements. Component designators or part number deviations can occur when material composition or soldering requirements are
updated.

Working Max ESR Max Ripple Physical

Voltage at 100 kHz Current at 85°CSize

(V) (Ω) (Irms) (mA) (mm)

Value Input Output

(µF) Bus Bus

(1)

8

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

APPLICATION INFORMATION (continued)

Table 1. Input/Output Capacitors (continued)

Capacitor Characteristics Quantity

Capacitor Vendor, Vendor

Type/Series (Style) Part Number

Panasonic, Poly-Aluminum:

S/SE (SMD) 6.3 180 0.005 4000 7,.3×4,3×4,2 2 N/R

Sanyo

SEPC, Os-con (Radial) 16 470 0.010 6100 10×13 1 ≤1 16SEPC470M

SVP (SMD) 6.3 470 0.015 4210 8×11,9 1 ≤2 6SVP470M

TPE, Poscap (SMD) 6.3 330 0.025 2400 7.3×4.3 1 ≤3 6TPE330ML

AVX, Tantalum

TPS Series III 10 470 0.045 1915 1 ≤5 TPSE477M010R0045

TPS (SMD) 10 470 0.100 1432 1 ≤5 TPSV477M010R0100

Kemet, Poly-Tantalum

T520 (SMD) 10 330 0.040 1800 1 1 T520X337M010AS

T530 (SMD) 10 330 0.010 >5200 1 ≤1 T530X337M010ASE010

Vishay-Sprague

595D, Tantalum (SMD) 10 330 0.100 1040 1 ≤5 595D377x0010D2T

594D, Tantalum (SMD) 10 330 0.045 2360 1 ≤5 594D337X0016R2T

94SA,Poly-Aluminum (SMD) 6.3 330 0.025 3500 1 ≤3 94SA337X06R3FBP

94SVP, Poly-Aluminum 6.3 470 0.017 3960 10 ×10,5 1 ≤2 94SVP477X06R3E12
(SMD) 8,3x12

Kemet, Ceramic X5R (SMD) 16 10 0.002 – 3225 mm 1 ≤5 C1210C106M4PAC

Murata, Ceramic X5R (SMD) 6.3 100 0.002 – 3225 mm 1

TDK, Ceramic X5R (SMD) 6.3 100 0.002 – 3225 mm 1

(2) N/R – Not recommended. The capacitor does not meet the minimum operating limits.
(3) A ceramic capacitor may be used to compliment electrolytic types at the input to further reduce high-frequency ripple current.

Working Max ESR Max Ripple Physical

Voltage at 100 kHz Current at 85°CSize

(V) (Ω) (Irms) (mA) (mm)

6.3 47 0.002 3225 mm 1 ≤5 C1210C476K9PAC

6.3 47 3225 mm 1

16 22 1

16 10 1

6.3 47 3225 mm 1

16 22 1

16 10 1

Value Input Output

(µF) Bus Bus

(2)

7.3L ×5.7W
×4.1H

4.3W ×7.3L
×4.0H

7.2L×6W
×4.1H

(3)

≤3 GRM32ER60J107M

(3)

≤5 GRM32ER60J476M

(3)

≤5 GRM32ER61C226K

(3)

≤5 GRM32DR61C106K

(3)

≤3 C3225X5R0J107MT

(3)

≤5 C3225X5R0J476MT

(3)

≤5 C3225X5R1C226MT

(3)

≤5 C3225X5R1C106MT

EEFSE0J181R

Designing for Very Fast Load Transients

The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1
A/µs. The typical voltage deviation for this load transient is given in the data sheet specification table using the
optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter's
regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with
any DC/DC converter once the speed of the transient exceeds its bandwidth capability. If the target application
specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional output
capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the capacitors
selected.

If the transient performance requirements exceed that specified in the data sheet, or the total amount of load
capacitance is above 5500 µF, the selection of output capacitors becomes more important.

9

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

CAPACITOR RECOMMENDATIONS FOR THE PTH12060Y DDR POWER MODULES
(12-V OPTION)

Input Capacitor

The recommended input capacitance is determined by the 560 µF
minimum ripple current rating. A 10-µF X5R/X7R ceramic capacitor can be added to reduce the reflected input
ripple current. The ceramic capacitor should be located between the input electrolytic and the module.

Ripple current, less than 100 mΩ equivalent series resistance (ESR) and temperature, are major considerations
when selecting input capacitors. Unlike polymer-tantalum capacitors, regular tantalum capacitors have a
recommended minimum voltage rating of 2 × (max. dc voltage + ac ripple). No tantalum capacitors were found
with sufficient voltage rating to meet this requirement. At temperatures below 0°C, the ESR of aluminum
electrolytic capacitors increases. For these applications, Os-Con, polymer-tantalum, and polymer-aluminum types
should be considered.

Output Capacitors

For applications with load transients (sudden changes in load current), regulator response will benefit from
external output capacitance. The recommended output capacitance of 940µF will allow the module to meet its
transient response specification (See Electrical Specifications table). For most applications, a high quality,
computer-grade aluminum electrolytic capacitor is adequate. These capacitors provide decoupling over the
frequency range, 2 kHz to 150 kHz, and are suitable for ambient temperatures above 0°C. Below 0°C, tantalum,
ceramic, or Os-Con type capacitors are recommended. When using one or more nonceramic capacitors, the
calculated equivalent ESR should be no lower than 4 mΩ (7 mΩ using the manufacturer's maximum ESR for a
single capacitor).

A list of preferred low-ESR type capacitors are identified in Table 2.

In addition to electrolytic capacitance, adding a 10-µF to 22-µF X5R/X7R ceramic capacitor to the output reduces
the output ripple voltage and improves the regulator's transient response. The measurement of both the output
ripple and transient response is also best achieved across a 10-µF ceramic capacitor.

[1]

minimum capacitance and 750 mArms

Ceramic Capacitors

Above 150 kHz, the performance of aluminum electrolytic capacitors is less effective. Multilayer ceramic
capacitors have a low ESR and a resonant frequency higher than the bandwidth of the regulator. They can be
used to reduce the reflected ripple current at the input, and improve the transient response of the output. When
used on the output, their combined ESR is not critical as long as the total value of ceramic capacitance does not
exceed 600 µF. Also, to prevent the formation of local resonances, do not place more than five identical ceramic
capacitors in parallel with values of 10 µF or greater.

Tantalum Capacitors

Tantalum type capacitors are most suited for use on the output bus, and are recommended for applications
where the ambient operating temperature can be less than 0°C. The AVX TPS, Sprague 593D/594/595, and
Kemet T495/T510 capacitor series are suggested over other tantalum types due to their higher rated surge,
power dissipation, and ripple current capability. As a caution, many general-purpose tantalum capacitors have
considerably higher ESR, reduced power dissipation, and lower ripple current capability. These capacitors are
also less reliable as they have lower power dissipation and surge current ratings. Tantalum capacitors that do not
have a stated ESR or surge current rating are not recommended for power applications.

When specifying Os-con and polymer tantalum capacitors for the output, the minimum ESR limit is encountered
well before the maximum capacitance value is reached.

Capacitor Table

Table 2 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple

current (rms) ratings. The recommended number of capacitors required at both the input and output buses is
identified for each capacitor type.

Note: This is not an extensive capacitor list. Capacitors from other vendors are available with comparable
specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical
parameters necessary to insure both optimum regulator performance and long capacitor life.

10

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

Designing for Very Fast Load Transients

The transient response of the dc/dc converter is characterized using a load transient with a di/dt of 1 A/µs. The
typical voltage deviation for this load transient is given in the data sheet specification table using the optional
value of output capacitance. As the di/dt of a transient is increased, the response of a converter's regulation
circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with any dc/dc
converter once the speed of the transient exceeds its bandwidth capability. If the target application specifies a
higher di/dt or lower voltage deviation, the requirement is met with additional output capacitor decoupling. In
these cases, special attention must be paid to the type, value, and ESR of the capacitors selected.

If the transient performance requirements exceed that specified in this data sheet, or the total amount of load
capacitance is above 5500 µF, the selection of output capacitors becomes more important.

Table 2. Input/Output Capacitors

Capacitor Characteristics Quantity

Capacitor Vendor,

Type/Series (Style)

Panasonic, Aluminum 25 560 0.065 1205 12,5 × 15 1 1 EEUFC1E561S

FC (Radial) 25 1000 0.060 1100 12,5 × 13,5 1 1 EEVFK1E102Q

FK (SMD) 35 680 0.060 1100 12,5 × 13,5 1 1 EEVFK1V681Q

United Chemi-Con

LXZ, Aluminum (Radial) 16 330 0.0014 5050 10 × 12,5 2 ≤2 16PS330MJ12

PS, Poly-Aluminum (Radial) 16 680 0.068 1050 10 × 16 1 1 LXZ16VB681M10X16LL

PXA, Poly-Aluminum (SMD) 16 330 0.014 5050 10 × 12,2 2 ≤2 PXA16VC331MJ12

Nichicon Aluminum 25 560 0.060 1060 12,5 × 15 1 1 UPM1E561MHH6

PM (Radial) 16 680 0.038 1430 10 × 16 1 1 UHD1C681MHR

HD (Radial) 35 560 0.048 1360 16 × 15 1 1 UPM1V561MHH6

Sanyo

TPE, pos-cap (SMD) 10 330 0.025 3000 7,3 L × 5,7 W N/R

SEPC, Os-con (Radial) 16 270 0.011 5000 8 × 12 2

SVP, Os-con (SMD) 16 330 0.016 4700 11 × 12 2 ≤2 16SVP330M

SVPC, Os-con (SMD) 4 1200 0.010 4700 8 × 11,9 N/R

AVX, Tantalum

TPS Series III (SMD) 10 470 0.045 >1723 7,3 L× 5,7 W N/R

TPS (SMD) 10 330 0.045 >1723 7,3 L ×4,3 W ×4,3 N/R

Kemet

T520, Poly-Tantalum ( SMD) 10 470 0.040 1800 7,3 L ×4,3 W ×4,3 N/R

T530, Tantalum/Organic 4 680 0.010 >5100 7,3 L ×4,3 W ×4,3 N/R
(SMD) H

Vishay-Sprague

594D, Tantalum (SMD) 10 470 0.100 1440 7,2 L ×6W× 4,1 H N/R

94SA, organic (Radial ) 16 1000 0.015 >9700 16 × 25 1 ≤2 94Sa108X0016HBP

94SVP, Organic (SMD) 16 330 0.017 >4500 10 × 12,7 2 ≤2 94SVP477X0016F12

Working Max ESR

Voltage at 100 kHz

(V) (Ω)

6.3 470 0.010 5200 7,3 L ×4,3 W ×4,3 N/R

Value Current at Physical Size Input Output

(µF) 85°C (Irms) (mm) Bus Bus

Max Ripple

(mA)

(1)

×4,1H

H

H

H

Vendor Number

(2)

≤3 10TPE330M

(3)

≤1 16SP270M

(2)

≤1 4SVPC1200M

(2)

≤5 TPSE477M019R0045

(2)

≤5 TPSE337M019R0045

(2)

≤5 T520X477M006ASE040

(2)

≤1 T530X687M004ASE010

(2)

≤1 T530X477M006ASE010

(2)

≤5 595D477X0010R2T

(1) Capacitor Supplier Verification

Please verify availability of capacitors identified in this table. Capacitor suppliers may recommend alternative part numbers because of
limited availability or obsolete products. In some instances, the capacitor product life cycle may be in decline and have short-term
consideration for obsolescence.

RoHS, Lead-free and Material Details

Please consult capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process
requirements. Component designators or part number deviations can occur when material composition or soldering requirements are

updated.
(2) N/R – Not recommended. The capacitor voltage rating does not meet the minimum operating limits.
(3) A total capacitance of 540 µF is acceptable based on the combined ripple current rating.

11

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

Table 2. Input/Output Capacitors (continued)

Capacitor Characteristics Quantity

Capacitor Vendor,

Type/Series (Style)

Working Max ESR

Voltage at 100 kHz

(V) (Ω)

Value Current at Physical Size Input Output

(µF) 85°C (Irms) (mm) Bus Bus

Kemet, Ceramic X5R (SMD) 16 10 0.002 3225 mm 1

6.3 47 0.002 3225 mm N/R

Murata, Ceramic X5R (SMD) 6.3 100 0.002 3225 mm N/R

6.3 47 3225 mm N/R

16 22 1

16 10 1

TDK, Ceramic X5R (SMD) 6.3 100 0.002 3225 mm N/R

6.3 47 3225 mm N/R

16 22 1

16 10 1

(4) Ceramic capacitors are recommended to complement electrolytic types at the input bus by reducing high-frequency ripple current.

Max Ripple

(mA)

(4)

≤5 C1210C106M4PAC

(2)

≤5 C1210C476K9PAC

(2)

≤4 GRM32ER60J107M

(2)

≤5 GRM32ER60J476M

(4)

≤5 GRM32ER61C226K

(4)

≤5 GRM32DR61C106K

(2)

≤4 C3225X5R0J107MT

(2)

≤5 C3225X5R0J476MT

(4)

≤5 C3225X5R1C226MT

(4)

≤5 C3225X5R1C106MT

Vendor Number

12

PTH03060Y

PTH05060Y, PTH12060Y

www.ti.com

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

TAPE AND REEL SPECIFICATION

13

www.ti.com

PTH03060Y
PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004 – REVISED OCTOBER 2005

TRAY SPECIFICATION

14

PACKAGE OPTION ADDENDUM

www.ti.com

12-Jan-2006

PACKAGING INFORMATION

Orderable Device Status

PTH03060YAH ACTIVE DIP MOD

(1)

Package

Type

Package
Drawing

Pins Package

Qty

Eco Plan

EUW 10 36 Pb-Free

ULE

PTH03060YAS ACTIVE DIP MOD

EUY 10 36 TBD Call TI Level-1-235C-UNLIM

ULE

PTH03060YAST ACTIVE DIP MOD

EUY 10 250 TBD Call TI Level-1-235C-UNLIM

ULE

PTH03060YAZ ACTIVE DIP MOD

EUY 10 36 Pb-Free

ULE

PTH03060YAZT ACTIVE DIP MOD

EUY 10 250 Pb-Free

ULE

PTH05060YAH ACTIVE DIP MOD

EUW 10 36 Pb-Free

ULE

PTH05060YAS ACTIVE DIP MOD

EUY 10 36 TBD Call TI Level-1-235C-UNLIM

ULE

PTH05060YAST ACTIVE DIP MOD

EUY 10 250 TBD Call TI Level-1-235C-UNLIM

ULE

PTH05060YAZ ACTIVE DIP MOD

EUY 10 36 Pb-Free

ULE

PTH05060YAZT ACTIVE DIP MOD

EUY 10 250 Pb-Free

ULE

PTH12060YAH ACTIVE DIP MOD

EUW 10 36 Pb-Free

ULE

PTH12060YAS ACTIVE DIP MOD

EUY 10 36 TBD Call TI Level-1-235C-UNLIM

ULE

PTH12060YAST ACTIVE DIP MOD

EUY 10 250 TBD Call TI Level-1-235C-UNLIM

ULE

PTH12060YAZ ACTIVE DIP MOD

EUY 10 36 Pb-Free

ULE

PTH12060YAZT ACTIVE DIP MOD

EUY 10 250 Pb-Free

ULE

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(RoHS)

(2)

Lead/Ball Finish MSL Peak Temp

Call TI N / A for Pkg Type

Call TI Level-3-260C-168 HR

Call TI Level-3-260C-168 HR

Call TI N / A for Pkg Type

Call TI Level-3-260C-168 HR

Call TI Level-3-260C-168 HR

Call TI N / A for Pkg Type

Call TI Level-3-260C-168 HR

Call TI Level-3-260C-168 HR

(3)

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.

12-Jan-2006

Addendum-Page 2

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third-party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:

Products Applications

Amplifiers amplifier.ti.com Audio www.ti.com/audio

Data Converters dataconverter.ti.com Automotive www.ti.com/automotive

DSP dsp.ti.com Broadband www.ti.com/broadband

Interface interface.ti.com Digital Control www.ti.com/digitalcontrol

Logic logic.ti.com Military www.ti.com/military

Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork

Microcontrollers microcontroller.ti.com Security www.ti.com/security

Telephony www.ti.com/telephony

Video & Imaging www.ti.com/video

Wireless www.ti.com/wireless

Mailing Address: Texas Instruments

Post Office Box 655303 Dallas, Texas 75265

Copyright  2006, Texas Instruments Incorporated