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부품번호 | EST7502B 기능 |
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기능 | PC Power Supply PWM | ||
제조업체 | EST | ||
로고 | |||
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EST7502B PC Power Supply PWM with Supervisor
GENERAL DESCRIPTION
The EST7502B is a pulse–width modulation (PWM) control circuit with complete protection circuits for
used in the SMPS (Switched Mode Power Supply). It contains various functions, which are Over
Voltage Protection, Under Voltage Protection, Power Good Output (PGO), Remote On/Off control and
etc. It can minimize external components of switching power supply systems in personal computer.
Over Voltage Protection (OVP) monitors 3.3V, 5V, 12V and PT input voltage level. Under Voltage
Protection (UVP) monitors 3.3V, 5V and 12V input voltage level. Power Good Output monitors the
voltage level of power supply.
FEATURES
• Complete PWM Control and Protection Circuitry
• Over Voltage Protection for 3.3V / 5V / 12V / PT
• Under Voltage Protection for 3.3V / 5V / 12V
• 280ms PG Time Delay
• Power Good Output is Open Drain Output
• PWM Control Output are Open Drain Output
• 280 ms Time Delay for UVP
• Remote ON/OFF function De–bounce Time
• Soft-Start function built-in
• 16–Pin Dual In–line Package
PIN CONFIGURATION
V33
V5
V12
PT
GND
RT
C1
C2
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
VADJ
OPNEGIN
OPOUT
VCC
DET
PG
SS
REM
ORDERING INFORMATION
ORDER NUMBER
Package
EST7502B
DIP 16
Shipping
Top Marking
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2007-10-15 V2
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EST7502B PC Power Supply PWM with Supervisor
ELECTRICALCHARACTERISTICS,TA=25℃, VCC=5V,
CHARACTERISTICS
SYMBOL TEST CONDITION Min. Typ. Max.
ERROR AMP SECTION
OPEN LOOP VOLTAGE GAIN
CROSS OVER POINT
OPNEG BIAS VOLTAGE
POWERSUPPLYREJECTIONRATIO
PSRR
0.5V ~ 3.5V
0dB
OPNEG OPEN
75 85
1000
2.40 2.45 2.50
45
OUTPUT SECTION
OUTPUT SATURATION VOLTAGE Vdssat
DRAIN OFF-STATE CURRENT
Idoff
RISING TIME
Tr
FALLING TIME
Tf
Id=200mA
Vcc=Vd=Vs=0V
1.1 1.3
2 10
100 200
50 200
PROTECTION SECTION
OVER VOLTAGE PROTECTION V33
(OVP)
V5
V12
PT
3.8 4.1 4.3
5.8 6.2 6.6
4.4 4.6 4.9
1.23 1.28 1.33
Tg.ov
UNDER VOLTAGE PROTECTION V33
(UVP)
V5
V12
510
1.7 1.9 2.2
2.7 3.0 3.3
2.1 2.4 2.7
UVP DISABLE VOLTAGE
UVP DELAY TIME
Tg.uv
PT
Td.uvp
120
0.55 0.62 0.68
100 280 380
REMOTE ON/OFF SECTION
REM HIGH INPUT VOLTAGE
REM LOW INPUT VOLTAGE
REM PULL HIGH VOLTAGE
REM DELAY TIME
Vremh
Vreml
Vremo
Td on/off
1.8
2.0
40
0.7
5.25
POWER GOOD SECTION
DETECT INPUT VOLTAGE
PG OUTPUT PULL–UP RESISTOR
PG OUTPUT LOAD RESISTOR
PG DELAY TIME
Vdet
Rpup, pg
Rpg
0.68
5
0.5 1
2
180 280 380
SINK CURRENT
SOFT START SECTION
SINK CURRENT OF SS
SOURCE CURRENT OF SS
Ipg.sink VPG=0.2V
Iss.sink RT=100KΩ
Iss.source
10
15
310
VCC Under Voltage Lockout(UVLO)
Start-up voltage
4.2
TOTAL DEVICE
STANDBY SUPPLY CURRENT
Icc
REM=5V
10 20
OSCILLATION SECTION
OSCILLATION FREQUENCY
Fosc RT=100KΩ
70 75 80
Unit
dB
KHZ
V
dB
V
uA
ns
ns
V
V
V
V
us
V
V
V
us
V
ms
V
V
V
ms
V
KΩ
KΩ
ms
mA
uA
uA
V
mA
KHZ
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EST7502B PC Power Supply PWM with Supervisor
7. Reference Application Circuit:
8. In some application power system, adding an external resistor (R9) could reduce the peak
value spike from the environments to pin 9 (REM) and avoid pin 9 (REM ) damaged by the
external noise.
EXTERNAL DIMENSIONS
DIM
INCHES
MIN MAX
A 0.740 0.770
B 0.250 0.270
C 0.145 0.175
D 0.015 0.021
F 0.040 0.070
G 0.100BSC
H 0.050BSC
J 0.008 0.015
K 0.110 0.130
L 0.295 0.305
M 0°
10°
S 0.020 0.040
MILLIMETERS
MIN
MAX
18.80
19.55
6.35 6.85
3.69 4.44
0.39 0.53
1.02 1.78
2.54BSC
1.27BSC
0.21 0.38
2.80 3.30
7.50 7.74
0° 10°
0.51 1.01
DIP-16 Outline Dimensions
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7페이지 | |||
구 성 | 총 7 페이지수 | ||
다운로드 | [ EST7502B.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
EST7502B | PC Power Supply PWM | EST |
EST7502C | POWER SUPPLY SUPERVISOR | EST |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |