ON NCP3064BDR2G, NCP3064DR2G, NCV3064DR2G, NCP3064BMNTXG, NCP3064BPG Schematic [ru]

NCP3064, NCP3064B,
NCV3064

1.5 A, Step-Up/Down/
Inverting Switching
Regulator with ON/OFF
Function

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The NCP3064 Series is a higher frequency upgrade to the popular
MC33063A and MC34063A monolithic DC−DC converters. These
devices consist of an internal temperature compensated reference,
comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This series was
specifically designed to be incorporated in Step−Down and Step−Up
and Voltage−Inverting applications with a minimum number of
external components. The ON/OFF

pin provides a low power

shutdown mode.

Features

• Input Voltage Range from 3.0 V to 40 V

• Logic Level Shutdown Capability

• Low Power Standby Mode, Typical 100 mA

• Output Switch Current to 1.5 A

• Adjustable Output Voltage Range

• 150 kHz Frequency Operation

• Precision 1.5% Reference

• Internal Thermal Shutdown Protection

• Cycle−by−Cycle Current Limiting

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

• These are Pb−Free Devices

Applications

• Step−Down, Step−Up and Inverting supply applications

• High Power LED Lighting

• Battery Chargers

ON/OFF

V

GND

R

sense

CC

C

IN

R

2

Ç

Ç

Ç

Ç

Ç

Ç

Ç

Ç

ON/OFF

Ipk

V

CC

FB

NCP3064

SWC

ÇÇ

SWE

ÇÇ

ÇÇ

ÇÇ

ÇÇ

CT

ÇÇ

ÇÇ

GND

ÇÇ

C

T

L

1

R

1

D

1

V

OUT

GND

DIAGRAMS

8

1

SOIC−8

D SUFFIX

CASE 751

PDIP−8

P, P1 SUFFIX

8

1

CASE 626

DFN8

MN SUFFIX

1

CASE 488AF

NCP3064 = Specific Device Code
x=B
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = Pb−Free Package

(Note: Microdot may be in either location)

1

1

MARKING

3064x

ALYWG

G

V3064

ALYWG

G

NCP3064x

AWL

YYWWG

NCV3064

AWL

YYWWG

NCP

3064x

ALYWG

G

NCV
3064

ALYWG

G

Figure 1. Typical Buck Application Circuit

© Semiconductor Components Industries, LLC, 2009

July, 2009 − Rev. 8

See detailed ordering and shipping information in the package

ORDERING INFORMATION

dimensions section on page 17 of this data sheet.

1 Publication Order Number:

NCP3064/D

NCP3064, NCP3064B, NCV3064

SOIC−8/PDIP−8 DFN8

Switch Collector

Switch Emitter

Timing Capacitor

GND

1

2

3

4

(Top View)

8

7

6

5

Figure 2. Pin Connections

8

ON/OFF

Ipk Sense

V

CC

7

6

ON/OFF

Bias

Comparator

−

+

0.2 V

ON/OFF

Ipk Sense

V

CC

Comparator
Inverting
Input

Switch Collector

Switch Emitter

Timing Capacitor

GND

NOTE: EP Flag must be tied to GND Pin 4 on PCB

EP Flag

(Top View)

ON/OFF

Ipk Sense

V

CC

Comparator
Inverting
Input

Figure 3. Pin Connections

TSD

1

Switch Collector

R

Q

S

CT

2

Switch Emitter

3

Timing Capacitor

S

Q

R

Oscillator

Comparator

Comparator Inverting Input

1.25 V

+

5

−

Reference

Regulator

4

GND

Figure 4. Block Diagram

PIN DESCRIPTION

Pin No. Pin Name Description

1 Switch Collector Internal Darlington switch collector

2 Switch Emitter Internal Darlington switch emitter

3 Timing Capacitor Timing Capacitor Oscillator Input, Timing Capacitor

4 GND Ground pin for all internal circuits

5 Comparator

6 V

7 Ipk Sense Peak Current Sense Input to monitor the voltage drop across an external resistor to limit the peak

8 ON/OFF ON/OFF Pin. Pulling this pin to High level turns the device in Operating. To switch into mode with

Inverting Input

CC

Inverting input pin of internal comparator

Voltage supply

current through the circuit

low current consumption this pin has to be in Low level or floating.

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2

NCP3064, NCP3064B, NCV3064

MAXIMUM RATINGS (measured vs. Pin 4, unless otherwise noted)

RATING

VCC (Pin 6) V

Comparator Inverting Input (Pin 5) V

Darlington Switch Emitter (Pin 2) (Transistor OFF) V

Darlington Switch Collector (Pin 1) V

Darlington Switch Collector to Emitter (Pins 1 and 2) V

Darlington Switch Peak Current I

Ipk Sense Voltage (Pin 7) V

Timing Capacitor Pin Voltage (Pin 3) V

Moisture Sensitivity Level MSL 1

Lead Temperature Soldering

Reflow (SMD Styles Only), Pb−Free Versions

ON/OFF Pin Voltage V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.

THERMAL CHARACTERISTIC

Rating Symbol Value Unit

PDIP−8 (Note 5) Thermal Resistance Junction−to−Air

SOIC−8 (Note 5) Thermal Resistance Junction−to−Air

DFN−8 (Note 5) Thermal Resistance Junction−to−Air

Storage temperature range T

Maximum junction temperature T

Operation Junction Temperature Range (Note 3) NCP3064

1. This device series contains ESD protection and exceeds the following tests:

Pins 1 through 8:

Human Body Model 2000 V per AEC Q100−002; 003 or JESD22/A114; A115
Machine Model Method 200 V

2. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.

3. The relation between junction temperature, ambient temperature and Total Power dissipated in IC is T

4. The pins which are not defined may not be loaded by external signals.

5. 1 oz copper, 1 in

2

copper area.

Thermal Resistance Junction−to−Case

Thermal Resistance Junction−to−Case

NCP3064B, NCV3064

SYMBOL VALUE UNIT

CC

CII

SWE

SWC

SWCE

SW

IPK

TC

T

SLD

ON/OFF

R

q

JA

R

q

JA

R

q

JC

R

q

JA

R

q

JC

STG

J MAX

T

J

−0.3 to 42 V

−0.3 to V

−0.6 to V

CC

CC

−0.3 to 42 V

−0.3 to 42 V

1.5 A

−0.3 to (VCC + 0.3 V) V

−0.2 to +1.4 V

260

(−0.3 to 25) < V

CC

100 °C/W

180

°C/W

45

78

°C/W

14

−65 to +150 °C

+150 °C

0 to +70

−40 to +125

= TA + RQ @ PD.

J

V

V

°C

V

°C

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3

NCP3064, NCP3064B, NCV3064

ELECTRICAL CHARACTERISTICS (V

= 5.0 V, −40°C < TJ < +125°C for NCP3064B and NCV3064, 0°C < TJ < +70°C for

CC

NCP3064 unless otherwise specified)

Symbol

Characteristic Conditions Min Ty p Max Unit

OSCILLATOR

f

OSC

I

DISCHG

I

CHG

I

C

I

DISCH

V

IPK

Frequency (V

/

Discharge to Charge Current Ratio (Pin 7 to VCC, TJ = 25°C) 5.5 6.0 6.5 −

Capacitor Charging Current (Pin 7 to VCC, TJ = 25°C) 275

Capacitor Discharging Current (Pin 7 to VCC, TJ = 25°C) 1.65 mA

Current Limit Sense Voltage (TJ = 25°C) 165 200 235 mV

5 = 0 V, CT = 2.2 nF,

Pin

T

= 25°C)

J

110 150 190 kHz

OUTPUT SWITCH (Note 6)

V

SWCE

I

C(OFF)

Darlington Switch Collector to
Emitter Voltage Drop

(ISW = 1.0 A, TJ = 25°C)

(Note 6)

1.0 1.3 V

Collector Off−State Current (VCE = 40 V) 1.0 10

COMPARATOR

V

TH

Threshold Voltage

TJ = 25°C 1.25 V

NCP3064 −1.5 +1.5 %

NCP3064B, NCV3064 −1.5 +1.5 %

REG

I

CII in

Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V) −6.0 2.0 6.0 mV

LiNE

Input Bias Current (Vin = Vth) −1000 −100 1000 nA

ON/OFF FEATURE

V

IH

V

IL

I

IH

I

IL

ON/OFF Pin Logic Input Level High
V

= Nominal Output Voltage

OUT

ON/OFF Pin Logic Input Level Low
V

= 0 V

OUT

ON/OFF Pin Input Current
ON/OFF

Pin = 5 V (ON)

ON/OFF Pin Input Current
ON/OFF

Pin = 0 V (OFF)

TJ = 25°C

T

= −40°C to +125°C

J

TJ = 25°C

T

= −40°C to +125°C

J

2.2

2.4

−

−

TJ = 25°C 15

TJ = 25°C 1.0

−

−

−

−

−

−

1.0

0.8

TOTAL DEVICE

I

CC

I

STBY

T

SHD

T

SHDHYS

Supply Current (VCC = 5.0 V to 40 V,

CT = 2.2 nF, Pin 7 = V

5 > Vth, Pin 2 = GND,

V

Pin

remaining pins open)

CC

,

Standby Quiescent Current ON/OFF Pin = 0 V (OFF)

T

= 25°C

J

= −40°C to +125°C

T

J

85 100

Thermal Shutdown Threshold 160 °C

Hysteresis 10 °C

7.0 mA

100

6. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

7. The V

depends on comparator response time and di/dt current slope. See the Operating Description section for details.

(Sense) Current Limit Sense Voltage is specified at static conditions. In dynamic operation the sensed current turn−off value

IPK

mA

mA

V

V

mA

mA

mA

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4

NCP3064, NCP3064B, NCV3064

p

0

0

350

300

250

200

150

100

50

OSCILATOR FREQUENCY (kHz)

0

0 1 2 3 4 5 6 7 8 9 1011 121314 1516 171819 2021

CT, CAPACITANCE (nF)

Figure 5. Oscilator Frequency vs. Timing

Capacitor C

2.3

2.2

2.1

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

VOLTAGE DROP (V)

1.2

1.1

1.0

0.9

−40 −20 0 20 40 60 80 100 120 140

1 A

0.75 A

0.5 A

ICE = 0.25 A

, JUNCTION TEMPERATURE (°C)

T

J

T

1.25 A

Figure 7. Emitter Follower Configuration Output
Darlington Switch Voltage Drop vs. Temperature

150

CT = 2.2 nF
T

145

140

135

130

FREQUENCY (kHz)

125

120

= 25°C

J

0 5 10 15 20 25 30 35 4

VCC, SUPPLY VOLTAGE (V)

Figure 6. Oscillator Frequency vs. Supply

Voltage

1.3

1.2

1.1

1.0

0.9

0.8

VOLTAGE DROP (V)

0.7

0.6

−40 −20 0 20 40 60 80 100 120 140

0.75 A

0.5 A

ICE = 0.25 A

T

, JUNCTION TEMPERATURE (°C)

J

1 A

1.25 A

Figure 8. Common Emmitter Configuration Out

Darlington Switch Voltage Drop vs. Temperatur

1.29

1.27

1.25

1.23

1.21

COMP. THRESHOLD VOLTAGE (V)

1.19

−40 −20 0 20 40 60 80 100 120 140

T

, JUNCTION TEMPERATURE (°C)

J

Figure 9. Comparator Threshold Voltage vs.

Temperature

1.6

1.5

1.4

1.3

1.2

1.1

1

ON/OFF COMP. THRESHOLD VOLTAGE (V)

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5

−40 −20 0 20 40 60 80 100 120 14

T

, JUNCTION TEMPERATURE (°C)

J

Figure 10. ON/OFF Comparator Threshold

Voltage vs. Temperature

NCP3064, NCP3064B, NCV3064

0.20

0.19

0.18

0.17

VOLTAGE (V)

, CURRENT LIMIT SENSE

0.16

ipk

V

0.15

−40 −20 0 20 40 60 80 100 120 140

TJ, JUNCTION TEMPERATURE (°C)

Figure 11. Current Limit Sense Voltage vs.

Temperature

450

400

350

300

250

200

150

100

50

STANDBY SUPPLY CURRENT (mA)

0

0 5 10 15 20 25 30 35 40

VIN, INPUT VOLTAGE (V)

Figure 12. Standby Current vs. Supply Voltage

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6

NCP3064, NCP3064B, NCV3064

INTRODUCTION

The NCP3064 is a monolithic power switching regulator
optimized for dc to dc converter applications. The
combination of its features enables the system designer to
directly implement step−up, step−down, and
voltage−inverting converters with a minimum number of
external components. Potential applications include cost
sensitive consumer products as well as equipment for
industrial markets. A representative block diagram is shown
in Figure 4.

Operating Description

The NCP3064 is a hysteric, dc−dc converter that uses a
gated oscillator to regulate output voltage. In general, this
mode of operation is some what analogous to a capacitor
charge pump and does not require dominant pole loop
compensation for converter stability. The Typical Operating
Waveforms are shown in Figure 13. The output voltage
waveform shown is for a step−down converter with the
ripple and phasing exaggerated for clarity. During initial
converter startup, the feedback comparator senses that the
output voltage level is below nominal. This causes the
output switch to turn on and off at a frequency and duty cycle
controlled by the oscillator, thus pumping up the output filter

capacitor. When the output voltage level reaches nominal,
the output switch next cycle turning on is inhibited. The
feedback comparator will enable the switching immediately
when the load current causes the output voltage to fall below
nominal. Under these conditions, output switch conduction
can be enabled for a partial oscillator cycle, a partial cycle
plus a complete cycle, multiple cycles, or a partial cycle plus
multiple cycles.

Oscillator

The oscillator frequency and off−time of the output switch
are programmed by the value selected for the timing
capacitor C

. Capacitor CT is charged and discharged by a

T

1 to 6 ratio internal current source and sink, generating a
positive going sawtooth waveform at Pin 3. This ratio sets
the maximum t

/(tON + t

ON

) of the switching converter as

OFF

6/(6 + 1) or 0.857 (typical).

The oscillator peak and valley voltage difference is
500 mV typically. To calculate the C

capacitor value for the

T

required oscillator frequency, use the equation found in
Figure 15. An Excel® based design tool can be found at
www.onsemi.com

on the NCP3064 product page.

Figure 13. Typical Operating Waveform

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7

NCP3064, NCP3064B, NCV3064

Peak Current Sense Comparator

With a voltage ripple gated converter operating under
normal conditions, output switch conduction is initiated by
the Voltage Feedback comparator and terminated by the
oscillator. Abnormal operating conditions occur when the
converter output is overloaded or when feedback voltage
sensing is lost. Under these conditions, the Ipk Current
Sense comparator will protect the Darlington output Switch.
The switch current is converted to a voltage by inserting a
fractional W resistor, R
Darlington output switch. The voltage drop across R

, in series with VCC and the

SC

SC

is
monitored by the Current Sense comparator. If the voltage
drop exceeds 200 mV with respect to V

, the comparator

CC

will set the latch and terminate output switch conduction on
a cycle−by−cycle basis. This Comparator/Latch
configuration ensures that the Output Switch has only a
single on−time during a given oscillator cycle.

V

turn−off

R

Resistor

s

V

ipk(sense)

Real

on

di/dt slope

Io

t_delay

I1

I through the

Darlington

Switch

inductor pins and with decreasing inductor value. It is
recommended to check the real max peak current in the
application at worst conditions to be sure that the maximum
peak current will never get over the 1.5 A Darlington Switch
Current maximum rating.

Thermal Shutdown

Internal thermal shutdown circuitry is provided to protect
the IC in the event that the maximum junction temperature
is exceeded. When activated, typically at 160°C, the Output
Switch is disabled. The temperature sensing circuit is
designed with 10°C hysteresis. The Switch is enabled again
when the chip temperature decreases to at least 150°C
threshold. This feature is provided to prevent catastrophic
failures from accidental device overheating. It is not
intended to be used as a replacement for proper
heat−sinking.

Output Switch

The output switch is designed in a Darlington
configuration. This allows the application designer to
operate at all conditions at high switching speed and low
voltage drop. The Darlington Output Switch is designed to
switch a maximum of 40 V collector to emitter voltage and
current up to 1.5 A

Figure 14. Current Sense Waveform

The V

IPK(Sense)

Current Limit Sense Voltage threshold is
specified at static conditions. In dynamic operation the
sensed current turn−off value depends on comparator
response time and di/dt current slope.

Real V
V

turn_off

Typical I

on Rsc resistor

turn−off

= V

ipk(sense)

comparator response time t

pk

+ Rs*(t

delay

*di/dt)

is 350 ns. The

delay

di/dt current slope is growing with voltage difference on the

ON/OFF Function

The ON/OFF function disables switching and puts the part
into a low power consumption mode. A PWM signal up to
1 kHz can be used to pulse the ON/OFF

and control the
output. Pulling this pin below the threshold voltage (~1.4 V)
or leaving it open turns the regulator off and has a standby
current <100 mA. Pulling this pin above 1.4 V (up to 25 V
max) allows the regulator to run in normal operation. If the
ON/OFF
connected to the input voltage V

feature is not needed, the ON/OFF pin can be

, provided that this

CC

voltage does not exceed 25 V.

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8

NCP3064, NCP3064B, NCV3064

APPLICATIONS

Figures 16, 20 and 24 show the simplicity and flexibility
of the NCP3064. Two main converter topologies are
demonstrated with actual test data shown below the circuit
diagrams.

Figure 15 gives the relevant design equations for the key
parameters. Additionally, a complete application design aid
for the NCP3064 can be found at www.onsemi.com.

(See Notes 8, 9, 10) Step−Down Step−Up Voltage−Inverting

t

on

t

off

t

on

C

T

I

L(avg)

I

pk (Switch)

R

SC

L

V

ripple(pp)

Vin* V

ǒ

DI

Vin* V

I

L(avg)

Ǹ

ǒ

L

V

) V

out

SWCE

t

on

t

off

t

on

ǒ

f

) 1

t

off

I

out

)

0.20

I

pk (Switch)

* V

SWCE

DI

L

1

Ǔ

8 f C

O

F
* V

out

Ǔ

DI

L

2

out

2

) (ESR)

CT+

Ǔ

t

on

2

It is possible to create applications with external
transistors. This solution helps to increase output current and
helps with efficiency, still keeping the cost of materials low.
Another advantage of using the external transistor is higher
operating frequency, which can go up to 250 kHz. Smaller
size of the output components such as inductor and capacitor
can be used then.

|V

V

out

Vin* V

f

381.6 @ 10
f

osc

I

out

I

L(avg)

I

pk (Switch)

Vin* V

ǒ

tonI

out

[

C

O

) VF* V

t
t

t

on

ǒ

t

off

*6

t

on

ǒ

t

off

0.20

SWCE

DI

L

) DIL@ ESR [

in

SWCE

on
off

Ǔ

) 1

* 343 @ 10

Ǔ

) 1

DI

L

)

2

Ǔ

*12

t

on

Vin* V

ǒ

tonI

| ) V

out

Vin* V

t
t

t

on

ǒ

f

t

off

t

on

ǒ

I

out

t

off

I

L(avg)

0.20

I

pk (Switch)

SWCE

DI

L

out

) DIL@ ESR

C

O

SWCE

on
off

) 1

) 1

)

DI

F

Ǔ

Ǔ

L

2

Ǔ

t

on

V

out

8. V

9. V

10.The calculated t

The Following Converter Characteristics Must Be Chosen:

− Darlington Switch Collector to Emitter Voltage Drop, refer to Figures 7, 5, 8 and 9.

SWCE

− Output rectifier forward voltage drop. Typical value for 1N5819 Schottky barrier rectifier is 0.4 V.

F

must not exceed the minimum guaranteed oscillator charge to discharge ratio.

on/toff

R

1

ǒ

V

TH

R

2

Ǔ

) 1

Figure 15. Design Equations

R

1

ǒ

V

TH

R

2

) 1

Ǔ

R

1

ǒ

V

TH

) 1

R

2

Vin − Nominal operating input voltage.
V

− Desired output voltage.

out

I

− Desired output current.

out

− Desired peak−to−peak inductor ripple current. For maximum output current it is suggested that DIL be chosen to be

DI

L

less than 10% of the average inductor current I
set by R

. If the design goal is to use a minimum inductance value, let DIL = 2(I

SC

. This will help prevent I

L(avg)

pk (Switch)

from reaching the current limit threshold

). This will proportionally reduce

L(avg)

converter output current capability.

f − Maximum output switch frequency.
V

ripple(pp)

value since it will directly affect line and load regulation. Capacitor C

− Desired peak−to−peak output ripple voltage. For best performance the ripple voltage should be kept to a low
should be a low equivalent series resistance (ESR)

O

electrolytic designed for switching regulator applications.

Ǔ

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9

NCP3064, NCP3064B, NCV3064

ON/OFF

V

GND

+

IN

C

220mF

Input

ON

R

R

10k

1

+

1

9

R15

C

2

0.1mF

ON/OFF

Ipk

V

CC

COMP

IC1

NCP3064

SOIC

SWC

SWE

CT

GND

D

1

C

10

R

2

12k0

2n2

L

47mH

1

R

3

3k9

2k4

R

4

C

8

0.1mF 220mF

C

V

OUT

9

+

GND

Figure 16. Typical Buck Application Schematic

Table 1. TESTED PARAMETERS

Input Voltage

Parameter

(V)

Value 10 − 16 3.3 Max. 0.6 A Max. 1.25

Output Voltage

(V)

Input Current

(A)

Output Current

(A)

Table 2. BILL OF MATERIAL

Manufacturer

Designator Qty Description Value Tolerance Footprint Manufacturer

R1 1 Resistor

0.15W

1% 1206 Susumu RL1632R-R150-F

R2 1 Resistor 12k 1% 1206 ROHM MCR18EZHF1202

R3 1 Resistor 3k9 1% 1206 ROHM MCR18EZHF3901

R4 1 Resistor 2k4 1% 1206 ROHM MCR18EZHF4701

R9 1 Resisitor 10k 1% 1206 ROHM MCR18EZHF1002

C1 1 Capacitor

220mF/35V

20% F PANASONIC EEEFP1V221AP

C2, C8 2 Capacitor 100nF 10% 1206 Kemet C1206C104K5RACTU

C9 1 Capacitor

220mF/6V

20% F8 SANYO 6SVP220M

C10 1 Capacitor 2.2nF 10% 1206 Kemet C1206C222K5RACTU

L1 1 Inductor

47mH

20% DO3316 CoilCraft DO3316P-473MLB

D1 1 Diode MBRS230 − SMB ON Semiconductor MBRS230LT3G

IC 1 Switching

NCP3064 − SOIC8 ON Semiconductor NCP3064DR2G

Regulator

Part Number

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10

NCP3064, NCP3064B, NCV3064

Figure 17. Buck Demoboard Layout Figure 18. Buck Demoboard Photo

75

Vin = 10 V

70

65

Vin = 16 V

60

EFFICIENCY (%)

55

50

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

Figure 19. Efficiency vs. Output Current for

Table 3. TEST RESULTS

Line Regulation Vin = 9 V to 12 V, V

Load Regulation Vin = 12 V, V

Output Ripple Vin = 12 V, V

Efficiency Vin = 12 V, V

= 3.3 V, I

out

= 3.3 V, I

out

= 3.3 V, I

out

OUTPUT CURRENT (A)

Buck Demoboard

= 3.3 V, I

out

out

out

out

= 800 mA 8 mV

out

= 800 mA 10 mV

= 100 mA to 800 mA < 85 mV Peak - Peak

= 500 mA 70%

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11

NCP3064, NCP3064B, NCV3064

L

1

R

10k0

150mF

Input

ON

R

1

9

0R15

C

C

2

1

100n

ON/OFF

V

GND

+

IN

Figure 20. Typical Boost Application Schematic

Table 4. TESTED PARAMETERS

Input Voltage

Parameter

Value 10 − 16 24 Max. 1.25 Max. 0.6

(V)

ON/OFF

Ipk

V

CC

COMP

100mH

IC1

SWC

SOIC

SWE

CT

GND

NCP3064

Output Voltage

(V)

C
2n2

D

10

2

R

5

18k0

R

4

1k0

Input Current

(A)

0.1mF

C

5

V

OUT

C

6

+

330mF

GND

Output Current

(A)

Table 5. BILL OF MATERIAL

Manufacturer Part

Designator Qty Description Value Tolerance Footprint Manufacturer

R1 1 Resistor

0.15W

1% 1206 Susumu RL1632R-R150-F

R5 1 Resistor 18k 1% 1206 ROHM MCR18EZHF1802

R6 1 Resistor 1k 1% 1206 ROHM MCR18EZHF1001

R9 1 Resisitor 10k 1% 1206 ROHM MCR18EZHF1002

C1 1 Capacitor

150mF/16V

20% F8 SANYO 6SVP150M

C2, C5 2 Capacitor 100nF 10% 1206 Kemet C1206C104K5RACTU

C6 1 Capacitor

330mF/25V

20% SMD Panasonic EEE-FK1E331GP

C10 1 Capacitor 2.2nF 10% 1206 Kemet C1206C222K5RACTU

L2 1 Inductor

100mH

20% DO3316 CoilCraft DO3316P-104MLB

D2 1 Diode MBRS230 − SMB ON Semiconductor MBRS230LT3G

IC 1 Switching

NCP3064 − SOIC8 ON Semiconductor NCP3064DR2G

Regulator

Number

Figure 21. Boost Demoboard Layout Figure 22. Boost Demoboard Photo

http://onsemi.com

12

NCP3064, NCP3064B, NCV3064

Table 6. TEST RESULTS

Line Regulation Vin = 9 V to 15 V, V

Load Regulation Vin = 12 V, V

Output Ripple Vin = 12 V, V

Efficiency Vin = 12 V, V

95

90

85

80

75

70

65

EFFICIENCY (%)

60

55

50

45

= 24 V, I

out

= 24 V, I

out

= 24 V, I

out

0 0.04 0.12 0.2 0.28 0.36 0.44

Figure 23. Efficiency vs. Output Current

= 24 V, I

out

out

out

out

= 250 mA 3 mV

out

= 50 to 350 mA 5 mV

= 50 to 350 mA < 350 mV Peak - Peak

= 200 mA 86%

Vin = 16 V

Vin = 10 V

OUTPUT CURRENT (A)

Current for Boost Demoboard

http://onsemi.com

13

ON/OFF

V

NCP3064, NCP3064B, NCV3064

Q

1

Q

2

D

2

L

22mH

1

R

5

3k9

C

5

0.1mF

R

4

2k4

C

+

1mF

V

OUT

9

R

Input

R

...... R

14

ON

R

1

100n

+

4 x R15

C

2

+

IN

C

1

m15

9

10k

16

ON/OFF

Ipk

V

CC

COMP

R

5

1k

IC1

NCP3064

SWC

SWE

GND

R

7

10k

D

1

CT

R

6

1k

GND

C
2n2

10

C

1n8

4

Figure 24. Typical Buck with External Transistor Application Schematic

Table 7. TESTED PARAMETERS

Input Voltage

Parameter

(V)

Value 10 – 16 3.3 Max. 1.25 Max. 3

Output Voltage

(V)

Input Current

(A)

Output Current

(A)

Table 8. BILL OF MATERIAL

Manufacturer

Designator Qty Description Value Tolerance Footprint Manufacturer

R1, R14,

4 Resistor 0.15R 1% 1206 Susumu RL1632R-R150-F

R15, R16

R5, R6 2 Resistor 1k 1% 1206 ROHM MCR18EZHF1001

R3 1 Resistor 3k9 1% 1206 ROHM MCR18EZHF3901

R4 1 Resistor 2k4 1% 1206 ROHM MCR18EZHF2401

R7;R9 2 Resistor 10k 1% 1206 ROHM MCR18EZHF1002

C1 1 Capacitor

270mF

20% 10 x 16 PANASONIC EEUFC1V271

C4 1 Capacitor 1n8 10% 1206 Kemet C1206C182K5RACTU

C2, C8 2 Capacitor 100nF 10% 1206 Kemet C1206C104K5RACTU

C9 1 Capacitor 1mF 20% F8 SANYO 4SA1000M

C10 1 Capacitor 2.2nF 10% 1206 Kemet C1206C222K5RACTU

Q1 1 Transistor MMSF7P03 − SOIC8 ON Semiconductor MMSF7P03HDR2G

Q2 1 Transistor NPN MMBT489L − SOT-23 ON Semiconductor MMBT489LT1G

D2 1 Diode MBR130T − SOD-123 ON Semiconductor MBR130T1G

IC1 1 Switching

NCP3064 − SOIC8 ON Semiconductor NCP3064DR2G

Regulator

D1 1 Diode MBRS330T − SMC ON Semiconductor MBRS330T3G

L1 1 Inductor

22mH

20% Coilcraft Coilcraft DO5040H-223MLB

Part Number

GND

http://onsemi.com

14

NCP3064, NCP3064B, NCV3064

Figure 25. Buck Demoboard with External

PMOS Transistor Layout

Figure 26. Buck Demoboard with External

PMOS Transistor Photo

90

85

Vin = 10 V

80

Vin = 16 V

75

70

EFFICIENCY (%)

65

60

0 0.5 1.0 1.5 2.0 2.5 3.0

OUTPUT CURRENT (A)

Figure 27. Efficiency vs. Output Current Current for Buck Demoboard with External PMOS Transistor

Table 9. TEST RESULTS

Line Regulation Vin = 9 V to 15 V, V

Load Regulation Vin = 12 V, V

Output Ripple Vin = 12 V, V

Efficiency Vin = 12 V, V

out

out

out

= 3.3 V, I

out

= 3.3 V, I

= 3.3 V, I

= 3.3 V, I

= 2 A 8 mV

out

= 0.5 to 3.0 A 10 mV

out

= 0.5 to 3.0 A < 300 mV Peak - Peak

out

= 2 A 82%

out

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15

NCP3064, NCP3064B, NCV3064

The picture in Figure 24. Typical Buck Application
Schematic shows typical configuration with external PMOS
transistor. Resistor R7 connected between timing capacitor
TC Pin and SWE Pin provides a pulse feedback voltage.
The pulse feedback approach increases the operating
ffrequency by up to 50%. Figure 28, Oscillator Frequency
vs. Timing Capacitor with Pulse Feedback, shows the
impact to the oscillator frequency at buck converter for V
= 12 V and V

= 10 kW. It also creates more regular switching

R

7

= 3.3 V with pulse feedback resistor

out

waveforms with constant operating frequency which results
in lower ripple voltage and improved efficiency.

450

400

350

300

250

200

150

100

Without Pulse

50

OSCILLATOR FREQUENCY (kHz)

Feedback

0

0246810121416182022

Figure 28. Oscillator Frequency vs. Timing Capacitor with Pulse Feedback

With Pulse
Feedback

TIMING CAPACITANCE (nF)

If the application allows ON/OFF

pin to be biased by
voltage and the power supply is not connected to Vcc pin at
the same time, then it is recommended to limit ON/OFF
current by resistor with value 10 kW to protect the NCP3064
device. This situation is mentioned in Figure 29, ON/OFF
Serial Resistor Connection.

This resistor shifts the ON/OFF

in

200 mV to higher value, but the TTL logic compatibility is

threshold by about

kept in full range of input voltage and operating temperature
range.

ON/OFF

V

IN

R

10k

IC1

R

sense

+

R15

ON/OFF

Ipk

V

CC

FB

NCP3064

SWC

SWE

CT

GND

Figure 29. ON/OFF Serial Resistor Connection

http://onsemi.com

16

NCP3064, NCP3064B, NCV3064

ORDERING INFORMATION

Device Package Shipping

NCP3064MNTXG DFN−8

(Pb−Free)

NCP3064BMNTXG DFN−8

(Pb−Free)

NCP3064PG PDIP−8

(Pb−Free)

NCP3064BPG PDIP−8

(Pb−Free)

NCP3064DR2G SOIC−8

(Pb−Free)

NCP3064BDR2G SOIC−8

(Pb−Free)

NCV3064MNTXG DFN−8

(Pb−Free)

NCV3064PG PDIP−8

(Pb−Free)

NCV3064DR2G SOIC−8

(Pb−Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

4000 Units / Tape & Reel

4000 Units / Tape & Reel

50 Units / Rail

50 Units / Rail

2500 Units / Tape & Reel

2500 Units / Tape & Reel

4000 Units / Tape & Reel

50 Units / Rail

2500 Units / Tape & Reel

†

http://onsemi.com

17

NOTE 2

−T−

SEATING
PLANE

H

58

−B−

14

F

−A−

C

N

D

G

0.13 (0.005) B

NCP3064, NCP3064B, NCV3064

PACKAGE DIMENSIONS

8 LEAD PDIP

CASE 626−05

ISSUE L

L

J

K

M

M

A

T

M

M

NOTES:

1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.

2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).

3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

DIM MIN MAX MIN MAX

A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020

F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050

J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135

L 7.62 BSC 0.300 BSC
M --- 10 --- 10
N 0.76 1.01 0.030 0.040

STYLE 1:

PIN 1. AC IN

2. DC + IN

3. DC - IN

4. AC IN

5. GROUND

6. OUTPUT

7. AUXILIARY

8. V

CC

INCHESMILLIMETERS

__

http://onsemi.com

18

−Y−

−Z−

NCP3064, NCP3064B, NCV3064

PACKAGE DIMENSIONS

SOIC−8 NB

CASE 751−07

ISSUE AJ

NOTES:

−X−
A

58

B

1

S

0.25 (0.010)

4

M

M

Y

K

G

C

SEATING
PLANE

0.10 (0.004)

H

D

0.25 (0.010) Z

M

Y

SXS

N

X 45

_

M

J

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.

MILLIMETERS

DIMAMIN MAX MIN MAX

4.80 5.00 0.189 0.197

B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.053 0.069
D 0.33 0.51 0.013 0.020
G 1.27 BSC 0.050 BSC
H 0.10 0.25 0.004 0.010
J 0.19 0.25 0.007 0.010
K 0.40 1.27 0.016 0.050

M 0 8 0 8

____

N 0.25 0.50 0.010 0.020
S 5.80 6.20 0.228 0.244

INCHES

SOLDERING FOOTPRINT*

1.52

0.060

7.0

0.275

0.6

0.024

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

4.0

0.155

1.270

0.050

SCALE 6:1

ǒ

inches

mm

Ǔ

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19

NCP3064, NCP3064B, NCV3064

PACKAGE DIMENSIONS

8 PIN DFN, 4x4

CASE 488AF−01

ISSUE C

REFERENCE

2X

2X

8X

NOTE 4

PIN ONE

DETAIL A

C0.15

C0.15

TOP VIEW

C0.10

C0.08

SIDE VIEW

1

K

e

BOTTOM VIEW

D

DETAIL B

(A3)

D2

A3

NOTES:

1. DIMENSIONS AND TOLERANCING PER
ASME Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN

0.15 AND 0.30MM FROM TERMINAL TIP.

4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.

5. DETAILS A AND B SHOW OPTIONAL
CONSTRUCTIONS FOR TERMINALS.

MILLIMETERS

DIM MIN MAX

A 0.80 1.00
A1 0.00 0.05
A3 0.20 REF

b 0.25 0.35

D 4.00 BSC
D2 1.91 2.21

E 4.00 BSC
E2 2.09 2.39

e 0.80 BSC

K 0.20 −−−

L 0.30 0.50
L1 −−− 0.15

A1

A
B

L

L

L1

E

A

SEATING

C

PLANE

DETAIL A

OPTIONAL

CONSTRUCTIONS

MOLD CMPDEXPOSED Cu

DETAIL B

ALTERNATE

CONSTRUCTIONS

A1

SOLDERING FOOTPRINT*

L

8X

4

2.21

E2

58

8X

b

0.10 C

0.05 C

AB

NOTE 3

4.30

2.39

0.80
PITCH

DIMENSIONS: MILLIMETERS

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.

8X

0.35

8X

0.63

OUTLINE

PACKAGE

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ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA

Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [e-mail]

N. American Technical Support: 800−282−9855 Toll Free

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Europe, Middle East and Africa Technical Support:

Phone: [phone]

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Phone: 81−3−5773−3850

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Order Literature: http://www.onsemi.com/orderlit

For additional information, please contact your local
Sales Representative

NCP3064/D

20