GR8876 Datasheet PDF - grenergy
| Part Number | GR8876 | |
| Description | Green-Mode PWM Controller | |
| Manufacturers | grenergy | |
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There is a preview and GR8876 download ( pdf file ) link at the bottom of this page. Total 14 Pages | ||
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GR8876
Green-Mode PWM Controller with Integrated Protections
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)
VCC over-voltage clamp
Gate output voltage clamp
Soft driving for reducing EMI
Over-voltage protection (OVP) on Vcc pin
Over-load protection (OLP)
Over-current protection (OCP) on CS pin
500mA driving capability
Applications
Open-frame SMPS
● Switching AC/DC adapter and battery charger
Description
The GR8876 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
resistance can be saved in order to limit the power
cost. 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. GR8876 provides
several protections such as OLP, OVP, and OCP for
fault conditions. The GR8876 improves the
performance and reduces the cost of power
supplies. It is available in both 8-pin SOP and 8-pin
DIP package.
Ordering and Marking Information
DIP-8
GR8876
XXXXX
SOP-8
GR8876
XXXXX
XXXXX – Date Code
XXXXX – Date Code
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.
2009.06 Ver. 1.2 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
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Typical Performance Characteristics
1.8
1.6
Current/mA
1.4
1.2
HV 1
0.8
0.6
-40
0 40
t/℃
Fig.1
80
120
GR8876
0.85
0.84
off/V0.83
Vcs0.82
0.81
0.8
-40
0 40
t/℃
Fig.2
80
120
17
16.2
on/V15.4
UVLO14.6
13.8
13
-40
0
℃40 80
t/
120
Fig.3
11
10.2
off/V 9.4
UVLO 8.6
7.8
7
-40
0 40
t/℃
Fig.4
80
120
70
68
f/KHzOSC
66
64
62
60
-40 0
40 80 120
t/℃
25
23
f/KHzG 1291
17
15
-40
Fig.5
2009.06 Ver. 1.2 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com
0 40
t/℃
Fig.6
80
120
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for GR8876 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ GR8876.PDF Datasheet ] | |
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