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What is GT1504-ADJ?

This electronic component, produced by the manufacturer "GMOS Technology", performs the same function as "2A PWM Buck Switching Regulator".


GT1504-ADJ Datasheet PDF - GMOS Technology

Part Number GT1504-ADJ
Description 2A PWM Buck Switching Regulator
Manufacturers GMOS Technology 
Logo GMOS Technology Logo 


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GT1504
150Khz, 2A PWM Buck Switching Regulator
General Description
Features
The GT1504 is a monolithic integrated circuit that
provide all the active functions for a step-down
switching regulator, capable of driving a 2A 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 GT1504
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 include a guaranteed
+4% tolerance on output voltage under specified
input voltage and output load conditions, and +15%
on the oscillator frequency. The output version
included fixed 3.3V, 5V, 12V, and an adjustable
type. The packages are available in a standard
8-lead SOP8.
- 3.3V, 5V, 12V and adjustable output versions
- Adjustable version output voltage range, 1.23V to
37V +4% max over line and load condiction
- SOP-8L packages
- Voltage mode non-synchronous PWM control
- Thermal-shutdown and current-limit protection
- ON/OFF shutdown control input
- Input voltage range up to 40V
- Output load current: 2A
- 150 kHz fixed frequency internal oscillator
- Low power standby mode
- Built-in switching transistor on chip
Applications
- Simple High-efficiency step-down(buck) regulator
- Efficient preregulator for linear regulators
- On-card switching regulators
- Positive to negative converter
- Battery Charger
Pin Assignments 脚位排列
(Top View)
VIN 1
Out 2
FB 3
SD 4
8 GND
7 GND
6 GND
5 GND
SOP-8L
Pin Descriptions 脚位描述
Name
VIN
Out
Gnd
FB
SD
Description
Operating voltage input.输入脚
Switching output.输出脚
Ground.接地脚
Output voltage feedback control.反馈脚
ON/OFF Shutdown.使能脚
150Khz, 2A PWM Buck Switching Regulator
Ordering Information
GT1504 XX X X
Output version
Package
-ADJ : Adjustable
-33 : 3.3V
-50 : 5.0V
-12 : 12V
BLANK: SOP-8L
Packing
Blank : Tube
A : Taping
GT1504
Block Diagram
SD
Current
Source
bias
1.235V
Reference
2.5V
Regulator
Start
up
200mV
220 mV
+
Comp_
VIN
Comp
+
FB
+
Amp
_
Comp
+
Pre-driver
2A
Switch
150kHz
OSC.
Thermal
Limit
Output
Gnd
GMOS Technology Crop.
www.gmos-semi.com
1/9
GMOS Technology Corp.
www.gmos-semi.com
2/9

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GT1504-ADJ equivalent
150Khz, 2A PWM Buck Switching Regulator
Package Information
(1) Package Type: SOP-8L
GT1504
L
VIEW "A"
7 (4X)
D
0.015x45
7 (4X)
Symbol
A
A1
A2
B
C
D
E
e
H
L
y
θ
e
B
y
Dimensions In Millimeters
Min.
Nom.
Max.
1.40
0.10
1.60
1.75
0.25
1.30 1.45 1.50
0.33 0.41 0.51
0.19 0.20 0.25
4.80 4.85 5.05
3.80 3.91 4.00
1.27
5.79 5.99 6.20
0.38
0O
0.71
1.27
0.10
8O
VIEW "A"
Dimensions In Inches
Min.
Nom.
Max.
0.055
0.040
0.063
0.069
0.100
0.051
0.057
0.059
0.013
0.016
0.020
0.0075
0.008
0.010
0.189
0.191
0.199
0.150
0.154
0.157
0.050
0.228
0.236
0.244
0.015
0O
0.028
0.050
0.004
8O
GMOS Technology Corp.
www.gmos-semi.com
9/9


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Featured Datasheets

Part NumberDescriptionMFRS
GT1504-ADJThe function is 2A PWM Buck Switching Regulator. GMOS TechnologyGMOS Technology

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