TEXAS INSTRUMENTS PTH04000W Technical data

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PTH04000W

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Track

GND

R #

1%, 0.1 W

(Required)

SET

Inhibit

47 F

(Required)

C 47 F

(Optional)

GND

STANDARD APPLICATION

* See the Application Information section for capacitor recommendations.

# See the Application Information section for R values.

SET

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SLTS247A – JUNE 2005 – REVISED JULY 2005

3-A, 3.3/5-V INPUT, ADJUSTABLE SWITCHING REGULATOR

WITH AUTO-TRACK™ SEQUENCING

PTH04000W

FEATURES

• Up to 3-A Output Current at 85°C

• 3.3-V / 5-V Input Voltage

• Wide-Output Voltage Adjust

• Surface Mount Package

• Safety Agency Approvals:

UL/CUL 60950, EN60950 VDE (Pending)

• Point-of-Load Alliance ( POLA™) Compatible

(0.9 V to 3.6 V)

• Efficiencies Up To 94%

• On/Off Inhibit

APPLICATIONS

• Telecommunications, Instrumentation,

and General-Purpose Circuits

• Undervoltage Lockout (UVLO)

• Output Overcurrent Protection

(Nonlatching, Auto-Reset)

• Overtemperature Protection

• Ambient Temperature Range: –40°C to 85°C

DESCRIPTION

The PTH04000W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output current. Occupying a small PCB area, the PTH04000W provides output current at a high efficiency and with minimal power dissipation, thereby eliminating the need for a heat sink. Their small size (0.75 inch × 0.5 inch), high efficiency, and low cost makes these modules practical for a variety of applications.

The input voltage range of the PTH04000W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V input bus. Using state-of-the-art switched-mode power-conversion technology, the PTH04000W can step down to voltages as low as 0.9 V from a 5-V input bus, with typically less than 1 W of power dissipation. The output voltage can be adjusted to any voltage over the range, 0.9 V to 3.6 V, using a single external resistor. This series includes Auto-Track™ sequencing. This feature simplifies the task of supply voltage sequencing in a power system by enabling modules to track each other, or any external voltage, during power up and power down. Other operating features include an undervoltage lockout (UVLO), on/off inhibit, output overcurrent protection, and overtemperature protection. Target applications include telecommunications, test and measurement applications, and high-end consumer products. The modules are available in both through-hole and surface-mount package options, including tape and reel. The PTH04000W is also compatible with TI's roadmap for RoHS and lead-free compliance.

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, Auto-Track, TMS320 are trademarks 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.

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PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

ORDERING INFORMATION

PTH04000W (Basic Model)

Output Voltage Part Number Description Package Designator

PTH04000WAH Horizontal T/H - Pb-free EUS

0.9 V - 3.6 V PTH04000WAS PTH04000WAZ

(1) (1)

Horizontal SMD

Horizontal SMD - Pb-free

(1) Add a T suffix for tape and reel option on SMD packages. (2) S suffix versions have SnPb solder ball (3) Z suffix versions have SnAgCu solder ball

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range unless otherwise noted

stg

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

(2) Moisture Sensitivity Level (MSL) Rating Level-3-260C-168HR

Operating free-air temperature Over VIrange -40 to 85 °C Lead temperature (H suffix) 5 seconds 260 Solder reflow temperature (S suffix) Surface temperature of module body or pins 235 °C Solder reflow temperature (Z suffix)

(2)

Surface temperature of module body or pins 260

Storage temperature -40 to 125 °C

only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(1)

(2)

(3)

EUT EUT

PTH04000W UNIT

(2)

RECOMMENDED OPERATING CONDITIONS

MIN MAX UNIT

Input voltage 3 5.5 V Operating free-air temperature -40 85 °C

PACKAGE SPECIFICATIONS

PTH04000Wx (Suffix AH, AS and AZ)

Weight 1.5 grams

Flammability Meets UL 94 V-O

Mechanical shock Per Mil-STD-883D, Method 2002.3, 1 msec, ½ sine, mounted 500 G

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

(1) Qualification limit.

(1)

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PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

ELECTRICAL CHARACTERISTICS

at 25°C free-air temperature, VI= 5 V, VO= 3.3 V, IO= IO(Max), CI= 47 µF (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

5.5 V

150

560

(1)

(3)

(2)

(4)

(7)

O(TOL)

Output current TA= 25 ° C, natural convection 0 3 Input voltage range Over IOrange 3

(2)

Set-point voltage tolerance TA= 25°C ±2% Temperature variation –40 ≤ TA≤ 85°C ±0.5% V

Line regulation Over VIrange ±1 mV Load regulation Over IOrange ±5 mV

Total output voltage variation 3%

O(ADJ)

Output voltage adjust range V

Includes set-point, line, load, –40 ≤ TA≤ 85°C

VI≥ 4.5 V 0.9 3.6 VI< 4.5 V 0.9 VI– 1.1 TA= 25 °C, IO= 2 A

(2) (2)

92% 89%

η Efficiency R

= 475 Ω, VO= 3.3 V

SET

= 2.32 k Ω, VO= 2.5 V

SET

= 6.65 k Ω, VO= 1.8 V 86%

SET

= 11.5 k Ω, VO= 1.5 V 84%

SET

= 26.1 k Ω, VO= 1.2 V 82%

SET

= 84.5 k Ω , VO= 1 V 78%

SET

Output voltage ripple 20 MHz bandwith 10 mV Overcurrent threshold Reset, followed by autorecovery 7 A

1 A/µs load step from 50% to 100% IOmax,

CO= 47 µF

Transient response

Recovery time 70 µs

VOover/undershoot 100 mV IILtrack Track Input Current (pin 2) Pin to GND –130 µA dV

/dt Track Slew Rate Capability CO≤ CO(max) 1 V/ms

track

UVLO Undervoltage lockout V

VI= increasing 2.95 3 VI= decreasing 2.7 2.8 Input high voltage (VIH) VI– 0.5 Open

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

Input low current (IIL) 10 µA

I (STBY)

MTBF Calculated reliability 15

Input standby current Pins 4 and 2 connected, pin 2 open 1 mA Switching frequency Over VIand IOranges 700 kHz External input capacitance Ceramic type (C1) 47

Ceramic type (C2) 0

External output capacitance

(6)

Nonceramic type (C3) 47 Equivalent series resistance (nonceramic) 4

(5) (6)

(6)

(8)

Per Telcordia SR-332, 50% stress, TA= 40°C, ground benign

µF

m Ω

106Hr

(1) See SOA temperature derating curves to identify maximum output current at higher ambient temperatures. (2) The minimum input voltage is 3 V or (V

2 V.

(3) The set-point voltage tolerance is affected by the tolerance and stability of R

tolerance of 1% with 100 ppm/°C or better temperature stability.

+ 1.1) V, whichever is greater. A 5-V input bus is recommended for output voltages higher than

. The stated limit is unconditionally met if R

SET

(4) This control pin has an internal pullup to the input voltage VI. An external pullup must not be used. If it is left open circuit, the module

operates when input power is applied. A small low-leakage (< 100 nA) MOS field effect transistor (MOSFET) is recommended for control. See the application information for further guidance.

(5) An external 47-µF ceramic capacitor is required across the input (VIand GND) for proper operation. Locate the capacitor close to the

module. (6) An external output capacitor is not required for basic operation. Additional capacitance at the load improves the transient response. (7) This is the calculated maximum capacitance. The minimum ESR limitation often results in a lower value. See the capacitor application

information for further guidance. (8) This is the minimum ESR for all the electrolytic (nonceramic) capacitance. Use 7 m Ω as the minimum when calculating the total

equivalent series resistance (ESR) using the max-ESR values specified by the capacitor manufacturer.

has a

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PTH04000W

(Top View)

PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

PIN ASSIGNMENT

TERMINAL FUNCTIONS

TERMINAL

NAME NO.

GND 1

Track 2 I

Inhibit 4 I

VOAdjust 5 I stability of the resistor should be 100 ppm/°C (or better). The set-point range is from 0.9 V to 3.6 V. The

I/O DESCRIPTION

This is the common ground connection for the VIand VOpower connections. It is also the 0 V reference for the Inhibit , the VOAdjust, and the Track control inputs.

This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage from 0 V up to the nominal set-point voltage. Within this range the output voltage follows the voltage at the Track pin on a volt-for-volt basis. When the control voltage is raised above this range, the module regulates at its set-point voltage. The feature allows the output voltage to rise simultaneously with other modules powered from the same input bus. If unused, this input should be connected to VI.

NOTE: Due to the undervoltage lockout feature, the output of the module cannot follow its own input voltage during power up. For more information, see the related application report (SLTA054).

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

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 disables the module's output. When the Inhibit control is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the module produces an output voltage whenever a valid input source is applied.

A 1% resistor must be connected between this pin and GND (pin 1) to set the output voltage of the module higher than 0.9 V. If left open-circuit, the output voltage defaults to this value. The temperature

electrical specification table gives the standard resistor value for a number of common output voltages. See the application information for further guidance.

6 O The regulated positive power output with respect to the GND node.

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TYPICAL CHARACTERISTICS (5-V INPUT)

100

0 0.5 1 1.5 2 2.5 3

V = 3.3 V

VO= 1.5 V

VO= 1.8 V

VO= 1.2 V

VO= 1 V

Efficiency - %

IO- Output Current - A

V = 2.5 V

0 0.5 1 1.5 2 2.5 3

V Output Voltage Ripple - mV

O PP

IO- Output Current - A

V = 3.3 V

V = 1.5 V

0.2

0.6

0.4

0.8

1.2

0 0.5 1 1.5 2 2.5 3

- Power Dissipation - W

IO- Output Current - A

V = 2.5 V

V = 1 V

0 0.5 1 1.5 2 2.5 3

- Output Current - A

Airflow:

T - Ambient Temperature - C

Nat Conv All V

EFFICIENCY OUTPUT RIPPLE

vs vs

OUTPUT CURRENT OUTPUT CURRENT

Figure 1. Figure 2.

PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

(1) (2)

POWER DISSIPATION AMBIENT TEMPERATURE

vs vs

OUTPUT CURRENT OUTPUT CURRENT

Figure 3. Figure 4.

(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 100 mm x 100 mm double-sided PCB with 2 oz. copper.

Applies to Figure 4 .

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100

0 0.5 1 1.5 2 2.5 3

VO= 2 V

VO= 1.8 V

VO= 1.5 V

VO= 1.2 V

VO= 1 V

VO= 0.9 V

Efficiency - %

IO- Output Current - A

0 0.5 1 1.5 2 2.5 3

V Output Voltage Ripple - mV

O PP

IO- Output Current - A

V = 1.2 V

V = 0.9 V

V = 1.8 V

0.2

0.6

0.4

0.8

1.2

0 0.5 1 1.5 2 2.5 3

- Power Dissipation - W

IO- Output Current - A

V = 1.8 V

V = 0.9 V

0 0.5 1 1.5 2 2.5 3

- Output Current - A

Airflow:

T - Ambient Temperature - C

Nat Conv All V

PTH04000W

SLTS247A – JUNE 2005 – REVISED JULY 2005

OUTPUT CURRENT OUTPUT CURRENT

TYPICAL CHARACTERISTICS (3.3-V INPUT)

(1) (2)

EFFICIENCY OUTPUT RIPPLE

vs vs

Figure 5. Figure 6.

POWER DISSIPATION AMBIENT TEMPERATURE

vs vs

OUTPUT CURRENT OUTPUT CURRENT

Figure 7. Figure 8.

(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 5 , Figure 6 , and Figure 7 . (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 100 mm x 100 mm double-sided PCB with 2 oz. copper.

Applies to Figure 8 .

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