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Wuxi Youda electronics
Wuxi Youda electronics


YD2576

SIMPLE SWITCHER 3A STEP-DOWN VOLTAGE



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YOUDA INTEGRATED CIRCUIT
YD2576
SIMPLE SWITCHER 3A STEP-DOWN VOLTAGE
REGULATORYD2576
DESCRIPTION
The YD2576 series of regulators are monolithic integrated ciruits that provide all the active functions for a
step-dpwn(buck) switching egulator,capable of driving 3A load with excellent line and regulation.
FEATURES
*Guaranteed 3A output current
*Requires only 4 external components
*52kHz fixed frequency internal oscillator
*High efficiency
*thermal shutdown and current limit protection
BLOCK DIAGRAM
注:R1=2.2K,R2=6.8K.
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com
SHENZHEN OFFICE Tel86-755-83740369 Fax86-755-83741418
Ver 5.0
1 of 3
2006-7-10



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YOUDA INTEGRATED CIRCUIT
YD2576
ABSOLUTE MAXIMUM RATINGS (Tamb=25)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
SYMBOL
Vcc
PD
Topr
Tstg
VALUE
45
15
-25 to +75
-65 to +150
UNIT
V
W
ELECTRICAL CHARACTERISTICS (Vcc=12V,Tamb=25,Unless otherwise specified)
Parameter
Symbol Test Condition Min.
Typ.
Max.
Unit
Output Voltage
Vout Iload=0.5A
4.9
5
5.1 V
Vout 0.5AIload3A 4.8 5 5.2 V
Output Voltage
8VVin40V
4.75
5
5.25 V
Efficiency
η Iload=3A
77
Tj=25
52 kHz
Osillator Frequency Fosc Tj=0to+125
47
58 kHz
Tj=-40to+125
42
63 kHz
Saturation Voltage
Tj=25
Vsat Tj=-40to+125
1.5 1.8 V
2V
Max Duty Cycle
DC
94 98
Current Limit
Tj=25
4.2 5.8 6.9 A
IcL Tj=-40to+125
3.5
7.5 A
Output Leakage
Tj=25
IL
Tj=-40to+125
0.8 2 mA
6 20 mA
Quniescent Current
Tj=25
Iq Tj=-40to+125
5 9 mA
11 mA
Standby Quniescent
Current
Standby Threshold
Istby
VSTB
Pin5=5V
50 200 uA
2V
WuXi YouDa Electronics Co., Ltd
2 of 3
Website: www.e-youda.com



Part Number YD2576
Description SIMPLE SWITCHER 3A STEP-DOWN VOLTAGE
Maker Wuxi Youda electronics - Wuxi Youda electronics
Total Page 3 Pages
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