YGMOS GT1500 User Manual

GMOS Technology

Crop. www.gmos

-

semi.com

■

General

Descr

iption

circuits

that provide

all the active

functions

for a

include

a

guaranteed

+4%

tolerance

on

output

voltage

under

specified

input

on

the oscillator

frequency.

The output

version

■

Features

-

-

3.3V,

5V, 12V and adjustable

output

versions

-

- - - - - - - -

Available

in

TO220

-5L

and TO263

-5L

packages

■

Applications

-

- - -

Simple

High

-

efficiency

step-down(buck)

regulator

- Battery

Charger

■

Pin

Assignments

( Top View

)

(

Top View

)

TO263

-5L 1 V

IN

5 SD

Metal Tab GND

1 V

IN

5 SD

■

Pin

Descriptions

Name

Description

V

IN

Output

Switching

output

输出

Gnd Ground

SD ON/OFF

Shutdown

使能

GT1500

150Khz, 3A PWM Buck Switching Regulator

The

GT1500 series are monolithic integrated

Adjustable version output voltage range, 1.23V to
step-down DC/DC converter, capable of driving a
3A load without additional transistor component.
Requiring a minimum number of external
component, the board space can be saved easily.
The external shutdown function can be controlled
by TTL logic level and then come into standby
mode. The internal compensation makes feedback
control have good line and load regulation without
external design. Regarding protected function,
thermal shutdown is to prevent over temperature
operating from damage, and current limit is against
over current operating of the output switch. The
GT1500 series operates at a switching frequency of
150Khz thus allowing smaller sized filter
components than what would be needed with lower
frequency switching regulators. Other features

voltage and output

load conditions, and +15%

included fixed 3.3V,
5V, 12V, and an adjustable type. The packages are
available in a standard 5-lead TO-220(T) package
and a 5-lead TO-263(S).

28V +4% max over line and load condiction
Voltage mode non-synchronous PWM control

Thermal-shutdown and current-limit protection
ON/OFF shutdown control input
Input voltage range up to 32V
Output load current: 3A
150 kHz fixed frequency internal oscillator
Low power standby mode
Built-in switching transistor on chip

Efficient preregulator for linear regulators
On-card switching regulators
Positive to negative converter

脚位排列

4 FB

3 Gnd

2 Output

TO220-5L

1/10

4 FB
3 Gnd
2 Output

Operating voltage input 输入脚

地

FB Output voltage feedback control反馈

GT1500

GMOS Technology

Corp. www.gmos

■

Ordering

Information

Package

GT1500

XX X X

Packing

Blank

:

Tube

A :

Taping

Blank

:

Adjustable

■

Block

Diagram

+ + + _

Output

SD

FB

+

150Khz, 3A PWM Buck Switching Regulator

Output version

T: TO220-5L

-33 : 3.3V

-50 : 5.0V

-12 : 12V

S: TO263-5L

Current
Source
bias

1.235V

Reference

_

Amp

2.5V

Regulator

Comp

Start
up

150kHz
OSC.

Comp

Comp

Pre-driver

Thermal
Limit

200mV

220mV

3A

Switch

V

IN

Gnd

2/10

-semi.com

GT1500

GMOS Technology

Corp. www.gmos

■

Absolute

Maximum

Ratings

Symbol

Parameter

Rating

Unit

V

CC

Supply

Voltage

+34 V V

SD

使能电压

ON/OFF

Pin input

voltage

-0.3 to +25 V V

FB

反馈电压

Feedback

Pin voltage

-0.3 to +25 V V

OUT

Output

voltage

to

Ground

-1 V P

D

Power

dissipation

Internally

limited

W T

ST

储存温度

Storage

temperature

-65 to +150

o

C T

OP

Operating

temperature

-40 to +125

o

C V

OP

Operating

voltage

+4.5

to

+25 V

■

Electrical

Characteristics

(All

Output

Voltage

Versions)

Unless

otherwise

specified,

V

=12V for 3.3V, 5V, adjustable

version

and V

=24V for the 12V version.

I

= 0.3A

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

60 I

B

Feedback

bias current

V

FB

=1.3V

(Adjustable

version

only)

40

100 nA 127 150 173 F

OSC

oscillator

frequency

110 173

Khz 1.4 V

SAT

saturation

voltage

I

OUT

=3A no outside

circuit

V

FB

=0V force

driver

on

1.3

1.5

V Max.

Duty

Cycle(ON)

V

FB

=0V force

driver

on

100 DC Min. Duty

cycle(OFF)

V

FB

=12V

force

driver

off 0 % 5.5 I

CL

current

limit

peak

current

no outside

cir

cuit

无外部电

V

FB

=0 force

driver

on

3.6 4.5

6.5

A Output

= 0 no

outside

circuit

V

FB

=12 force

driver

off

200 uA I

L

Output

输出

V

IN

=

32V 2 60 mA I

Q

Quiescent

Current

V

FB

=12 force

driver

off

5 10 mA

250 I

STBY

Standby

Quiescent

ON/OFF

pin=5V

Current

V

IN

=40V

150

300

uA V

IL

Low (regulator

ON)低 -

0.6 V

IH

ON/OFF

pin logic

input

High

(regulator

OFF)

2.0 1.3 - V I

H

ON/OFF

pin logic

V

LOGIC

=2.5V

(OFF)

15 25

I

L

入电流

ON/OFF

pin input

current

V

LOGIC

=0.5V

(ON)

0.02 5 uA TO220

-5L

2.5

Θ

JC

Thermal

Resistance

TO263

-5L

Junction

to

3.5

o

C/W TO220

-5L 28 Θ

JA

Thermal

Resistance

With

copper

area of approximately

3

in

2

TO263

-5L

Junction

to

23

o

C/W

150Khz, 3A PWM Buck Switching Regulator

符号

输入电压

对地输出

耗散功率

运行温度

运行电压

反馈偏流

震荡频率

参数

IN

IN

范围

单位

LOAD

仅仅适用于可调

饱和电压

无外部电路

强制驱动开

Output = 1

待机静态电流

threshold voltage

使能输入阀值电压

input current 使能输入电流

电流限度

Leakage泄漏
Current电流

静态电流

热阻

热阻

峰值电流

强制驱动开

强制驱动关

强制驱动关

高

Case 结壳

Ambient 结环

3/10

-semi.com