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P4596 Datasheet

PWM CONTROL 3A STEP-DOWN CONVERTER

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UNISONIC TECHNOLOGIES CO., LTD
P4596
Preliminary
LINEAR INTEGRATED CIRCUIT
PWM CONTROL 3A
STEP-DOWN CONVERTER
DESCRIPTION
The UTC P4596 consists of 3A step-down switching regulator
with PWM control which includes a reference voltage source,
oscillation circuit, error amplifier, internal PMOS and etc.
The UTC P4596 can provide low-ripple power, high efficiency,
and excellent transient characteristics and an enable function, an
over current protect function and a short circuit protect function
are built inside, And the PWM control circuit can vary the duty
ratio linearly from 100 down to 0%. This converter also includes
an error amplifier circuit as well as a soft-start circuit that prevents
overshoot at startup. These ICs can work as step-down switching
regulators with the addition of an internal P-channel Power MOS,
a coil and a diode connected externally. They provide such
outstanding features: low current consumption. It is also suitable
for the operation via an AC adapter because this converter can
accommodate an input voltage up to 40V.
FEATURES
* Input voltage8V~40V
* Duty ratio0%~100% PWM control
* Enable with Soft-Start function
* Oscillation frequency can be set by outside resistance
* Current Limit, SCP and OTP
ORDERING INFORMATION
Ordering Number
P4596G-SH2-R
Package
HSOP-8
HSOP-8
Packing
Tape Reel
P4596G-SH2-R
MARKING
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) SH2: HSOP-8
(3) G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 4
QW-R103-064.b




Unisonic Technologies

P4596 Datasheet Preview

P4596 Datasheet

PWM CONTROL 3A STEP-DOWN CONVERTER

No Preview Available !

P4596
Preliminary
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
EN/SS
VSS
VGATE
VCC
SW
FB
COMP
OSC
Enable and Soft-start pin
Ground
Driver GATE clamping pin.
IC power supply pin
Switch pin.
Feedback voltage
Compensation pin
Frequency Set Pin.
BLOCK DIAGRAM
DESCRIPTION
EN/SS
BIAS
1.23V
2.5V
REFERENCE REGULATOR
START-UP
Oscillator
OCP
0.815 V +
FB -AMP COMP.
C+- OMP.
PWM
OTP
COMP
OSC
SW
VCC
VGATE
VSS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R103-064.b


Part Number P4596
Description PWM CONTROL 3A STEP-DOWN CONVERTER
Maker Unisonic Technologies
Total Page 4 Pages
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