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GR8876AKAL ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 1 Page - Grenergy Opto, lnc.

๋ถ€ํ’ˆ๋ช… GR8876AKAL
์ƒ์„ธ๋‚ด์šฉ  Green-Mode PWM Controller with Integrated Protections
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์ œ์กฐ์‚ฌ  GRENERGY [Grenergy Opto, lnc.]
ํ™ˆํŽ˜์ด์ง€  http://www.grenergy-ic.com/
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GR8876AKAL ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 1 Page - Grenergy Opto, lnc.

 
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2010.10 Ver. 1.0 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
1
GR8876A
Features
High-voltage (500V) startup circuit
Current mode PWM
Very low startup current (<20uA)
Under-voltage lockout (UVLO)
Non-audible-noise green-mode control
Programmable switching frequency
Cycle-by-cycle peak current limiting
Internal leading-edge blanking
Internal slope compensation
Internal 4ms soft start (Fs = 65KHz)
Gate output voltage clamp
Soft driving for reducing EMI
Over-voltage protection (OVP) on Vcc pin
Over-load protection (OLP)
500mA driving capability
Applications
Open-frame SMPS
โ—
Switching AC/DC adapter
Description
The GR8876A is a highly-integrated, low startup
current,
current
mode
PWM
controller
with
green-mode function and high-voltage start up
circuit. A high-voltage current source supplies the
start up current and the traditional start-up resistor
can be saved in order to reduce the power
dissipation due to start-up resistor. The controller
also includes the leading-edge blanking of the
current sensing, internal slope compensation and
cycle-by-cycle peak current limiting. It is also
integrated soft driving for reducing EMI, gate output
voltage
clamp
function
for
protecting
power
MOSFET. GR8876A provides several protections
such as OLP, OVP, and OCP for fault conditions.
The GR8876A improves the performance and
reduces the cost of power supplies. It is available in
both 8-pin SOP,7-pin SOP and 8-pin DIP package.
Ordering and Marking Information
DIP-8/SOP-8/SOP-7
Code 1
8
9
A
B
G
H
I
J
Year 2008 2009 2010 2011
2016
2017
2018 2019
Code 2
1
2
3
4
9
A
B
C
Month Jan. Feb. Mar. Apr.
โ— โ— โ—
Sep.
Oct.
Nov.
Dec.
Grenergy OPTO Inc. reserves the right to make changes to improve reliability or manufacture ability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Green-Mode PWM Controller with Integrated Protections


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