P1596G-33-TA5-T [UTC]

Switching Regulator;


型号：	P1596G-33-TA5-T
厂家：	Unisonic Technologies
描述：	Switching Regulator
文件：	总7页 (文件大小：353K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

P1596

LINEAR INTEGRATED CIRCUIT

150KHZ, 1.5A PWM BUCK

DC/DC CONVERTER



DESCRIPTION

TO-220B

HSOP-8

TO-220-5

The UTC P1596 series is a step-down switching regulator able to

provide 1.5A output current. The available output voltages are 2.5V,

3.3V, 5V, 12V and an adjustable output version.



FEATURES

* Output load current: 1.5A

TO-263-5

* Adjustable version output voltage range, 1.23V ~ 18V±4%

* 150KHz ±15% fixed switching frequency

* Voltage mode non-synchronous PWM control

* Thermal-shutdown and current-limit protection

* Operating voltage can be up to 24V

* Low power standby mode

* High efficiency

* Internal current and thermal limit

* Built-in switching transistor on chip

 ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

P1596L-xx-TA5-T

P1596L-xx-TB5-T

P1596L-xx-SH2-R

P1596L-xx-TQ5-T

P1596L-xx-TQ5-R

P1596G-xx-TA5-T

P1596G-xx-TB5-T

P1596G-xx-SH2-R

P1596G-xx-TQ5-T

P1596G-xx-TQ5-R

TO-220-5

TO-220B

HSOP-8

Tube

Tape Reel

Tube

TO-263-5

Tape Reel

Note: xx: Output Voltage, refer to Marking Information.

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P1596

LINEAR INTEGRATED CIRCUIT



MARKING INFORMATION

PACKAGE

VOLTAGE CODE

MARKING

TO-220-5

TO-220B

TO-263-5

25:2.5V

33:3.3V

50:5.0V

12:12V

AD:ADJ

HSOP-8



PIN CONFIGURATION



PIN DESCRIPTIONS

PIN NO.

PIN NAME

DESCRITION

FOR TO-220-5, TO-220B, TO-263-5

V_IN

GND

Operating voltage input

Switching output

Ground

Feedback voltage

ON/OFF shutdown

FOR HSOP-8

PIN NO.

PIN NAME

V_IN

DESCRITION

Operating voltage input

Switching output

Feedback input

Enable pin

5, 6, 7, 8

GND

Ground

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P1596

 BLOCK DIAGRAM

LINEAR INTEGRATED CIRCUIT

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P1596

LINEAR INTEGRATED CIRCUIT



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

V_CC

RATINGS

UNIT

Maximum Supply Voltage

Operating Voltage

V_OPR

V_ON/OFF

V_FB

4.5 ~ 22

ON/OFF Pin Input Voltage

Feedback Pin Voltage

-0.3 ~ +18

-1

Output Voltage to Ground (Steady State)

Power Dissipation

V_OUT

P_D

Internally limited

-40 ~ +125

-65 ~ +150

°С

Operating Temperature

Storage Temperature

T_OPR

T_STG

Note: Absolute maximum ratings are those values beyond which the device which the device could be permanently

damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

UNIT

TO-220B/TO-220-5

Junction to Case

HSOP-8

θ_JC

°С/W

TO-263-5



ELECTRICAL CHARACTERISTICS

(T_J=25°С, V_IN=12V for the 2.5V 3.3V, 5V, and Adjustable version and V_IN=24V for the 12V version, I_LOAD=500mA.)

PARAMETER

2.5V

SYMBOL

TEST CONDITIONS

3.8V≦V_IN≦24V, 0.2A≦I_LOAD≦1.5A

4.75V≦V_IN≦24V, 0.2A≦I_LOAD≦1.5A

7V≦V_IN≦24V, 0.2A≦I_LOAD≦1.5A

15V≦V_IN≦24V, 0.2A≦I_LOAD≦1.5A

V_IN=12V, I_LOAD=1.5A

MIN TYP MAX UNIT

2.4

2.5

2.6

3.3V

5.0V

12V

3.168 3.3 3.432

Output Voltage

Efficiency

V_OUT

4.8

5.0

5.2

11.52

12.48

2.5V

3.3V

5.0V

12V

V_IN=12V, I_LOAD=1.5A

V_IN=24V, I_LOAD=1.5A

UTC P1596-ADJ

Output Feedback

Efficiency

4.75V≦V_IN≦24V, 0.2A≦I_LOAD≦1.5A

V_FB

1.193 1.23 1.267

V_OUTProgrammed for 3V

V_IN=12V, I_LOAD=1.5A

ALL OUTPUT VOLTAGE

Feedback Bias Current

Oscillator Frequency

Saturation Voltage

I_BIAS

f_OSC

V_SAT

Adjustable Version Only, V_FB=1.3V

(Note 1)

-10

150

1.25

100

-50

173

1.4

KHz

127

1.8

I_OUT=2A (Note 2, 3)

(Note 3)

Max Duty Cycle (ON)

Min Duty Cycle (OFF)

Current Limit

I_CL

I_L

(Note 4)

Peak Current (Notes 2, 3)

Output=0V (Notes 2, 4)

Output=-1V, V_IN= 24V

(Note 4)

2.25 3.45

-200

-5

A

Output Leakage Current

Quiescent Current

I_Q

Standby Quiescent Current

I_STBY

ON/OFF Pin=5V (OFF) , V_IN= 24V

150

Note 1: The switching frequency is reduced when the second stage current limit is activated.

2: No diode, inductor or capacitor connected to output pin.

3: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.

4: Feedback pin removed from output and connected to 12V for the 2.5V 3.3V, 5V, and the ADJ. version, and

15V for the 12V version, to force the output transistor switch OFF.

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LINEAR INTEGRATED CIRCUIT



TYPICAL APPLICATION

FOR ADJUSTABLE OUTPUT VOLTAGE VERSION

V_OUT×(R₁/(R₁+ R₂))=V_REF

V_OUT= V_REF(1+ R₂/R₁)

Where V_REF=1.23V

R₂=R₁((V_OUT/ V_REF)-1)

FOR FIXED OUTPUT VOLTAGE VERSIONS

FOR HSOP-8 FIXED OUTPUT VOLTAGE VERSIONS

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LINEAR INTEGRATED CIRCUIT



TYPICAL CHARACTERISTICS

Output Voltage v.s. Temperature

(V_IN=12V, I_OUT=1.5A)

Efficiency v.s. Temperature

(V_IN=12V, V_OUT=3.3V, I_OUT=1.5A)

3.4

3.35

3.3

3.25

3.2

3.15

3.1

3.05

-40 -20

20 40 60 80 100 120 140

Temperature, T_A(°С)

-50 -30 -10 10 30 50 70 90 110 130

Temperature, T_A(°С)

Saturation Voltage v.s. Temperature

(V_CC=12V, V_FB=0V, V_SD=0)

Switch Current Limit v.s. Temperature

(V_CC=12V, V_FB=0V)

1.5

1.4

1.3

3.5

1.5A

1.2

1.1

2.5

0.9

0.5A

0.8

0.7

75 100 125

-50

-25

-50

-30 -10

Temperature, T_A(°С)

Supply Current v.s. Temperature

(V_CC=12V, No Load, V_ON/OFF=0V,(Switch ON))

Supply Current v.s. Temperature

(V_CC=12V, No Load, V_ON/OFF=5V,(Switch OFF))

Switch OFF

Switch ON

-50 -30 -10

Temperature, T_A(°С)

130

90 110

130 150

50 70

-50 -30 -10 10 30 50 70 90 110

Temperature, T_A(°С)

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P1596

LINEAR INTEGRATED CIRCUIT



TYPICAL CHARACTERISTICS (Cont.)

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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