EST7502CS PDF даташит
Спецификация EST7502CS изготовлена «EST» и имеет функцию, называемую «POWER SUPPLY SUPERVISOR». |
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Детали детали
Номер произв | EST7502CS |
Описание | POWER SUPPLY SUPERVISOR |
Производители | EST |
логотип |
8 Pages
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EST7502C/EST7502CS
POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER
Description
The EST7502C is designed with a pulse-width-modulation control circuit
and a complete power supervisor for use in the switched mode power
supply .
It contains various functions, like under voltage protection (UVP), over
voltage protection (OVP), power good output (PG) and ON/OFF control
(REM).
UVP(Under voltage protection) function is for +3.3V, +5V, +12V outputs.
OVP(Over voltage protection) function is for +3.3V, +5V, +12V and PT is
for extra protection input.
PG(Power good signal) is a safe operation signal to inform the external
parts.
REM(Remote on/off) is used to control the SMPS on/off. The REM control
signal has the on/off transferred debounce–time.
PIN CONFIGURATION (Top View)
FEATURE
■ 3-channel under voltage protection (UVP)
■ 3-channel over voltage protection (OVP)
■ 1-channel extra protection (PT)
■ 1-channel sense input to control the PG (SEN)
■ Remote on/off control function (REM)
■ Dual output for push-pull operation (OP1/OP2)
■ Soft start capability by external capacitor (SS)
■ VCC under voltage lockout
■ 16-Pin dual in-line package
■ Pb-free Package are available
ORDERING INFORMATION
ORDER NUMBER
EST7502C
EST7502C
Package
DIP-16 (Pb-free)
SOP-16(Pb-free)
REFERENCE APPLICATION CIRCUIT
Shipping
Tube
Tube
Top Marking
EST.7502C
EST.7502C
www.esthome.com
1
2012.5.1 Rev.A1.5 datasheet
No Preview Available ! |
EST7502C
POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER
PIN DESCRIPTION
Pin Symbol
1 V33
2 V5
3 V12
4 PT
5 GND
6 RT
7 OP1
8 OP2
9 REM
10 SS
11 PG
12 SEN
13 VCC
14 COMP
15 NEG
16 POS
Type
I
I
I
I
-
-
O
O
I
-
O
I
I
O
I
I
Function
OVP, UVP for +3.3V
OVP, UVP for +5V
OVP, UVP for +12V
Extra protection input
Ground
Oscillation frequency setting resistor
PWM output1
PWM output2
Remote ON/OFF control input
Soft start function setting capacitor
Power good signal
Sense signal input
Supply voltage
Error amplifier output
Error amplifier (-) input
Error amplifier (+) input
FUNCTION BLOCK DIAGRAM
ABSOLUTE MAXIMUN RATINGS
PARAMETER
Supply Voltage
VCC
Input Voltage
V33,V5,V12,PT,REMB,SEN,POS,NEG
Output Voltage
OP1,OP2,PG,COMP
Operating
Range
Temperature TO
Storage Temperature Range TS
MIN
MAX
UNITS
-0.3 7 V
-0.3 7 V
-0.3 7 V
-20 +85 oC
-65 150 oC
www.esthome.com
2 2012.5.1 Rev.A1.5 datasheet
No Preview Available ! |
EST7502C
POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER
ELECTRICAL CHARACTERISTICS ( For VCC=5V and Tj=25 oC )
PARAMETER
CONDITIONS
Over Voltage Protection (OVP- V33,V5,V12,PT)
OV33
Over voltage threshold
OV5
OV12
PT
Noise debounce time
Tg.ov
Under Volatge Protection (UVP- V33,V5,V12)
UV33
Under voltage threshold
UV5
UV12
Noise debounce time
Tg.uv
PG check under voltage
delay time
Td.uv
Soft Start (SS)
Sink current
Source current
Isink
Isource
RT=100 KΩ
VCC Under Voltage Lockout (UVLO)
Start-up voltage
REM Input Pin (REM)
High level input voltage
Low level input voltage
REM delay time
VIH
VIL
Td.on/off
Power Good (PG)
PG delay time
SEN voltage threshold
Sink current
Output load resistor
PG internal pull high
resistor
Td.pg
Ipg.sink
Rload
Rpull.up
VPG=0.2V
Oscillation Frequency
PWM frequency
Fosc
RT=100 KΩ
Error Amplifier (POS,NEG,COMP)
Reference voltage
Vref
Open loop gain
Avo
Unity gain bandwidth
BW
Power supply rejection
ratio
PSRR
Vneg
0dB
Total Device
Supply current
ICC REM = 5V
MIN
3.8
5.8
4.4
1.23
1.7
2.7
2.1
180
1.8
180
0.5
70
2.40
75
45
TYP
4.1
6.2
4.6
1.28
510
1.9
3.0
2.4
120
280
15
310
4.2
40
280
0.68
10
1
5
75
2.45
85
1
6
MAX
4.4
6.6
4.9
1.33
2.2
3.3
2.7
380
0.7
380
2
80
2.50
UNITS
V
V
V
V
us
V
V
V
us
ms
uA
uA
V
V
V
ms
ms
V
mA
KΩ
KΩ
KHz
V
dB
MHz
dB
mA
www.esthome.com
3 2012.5.1 Rev.A1.5 datasheet
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Номер в каталоге | Описание | Производители |
EST7502C | POWER SUPPLY SUPERVISOR | EST |
EST7502CS | POWER SUPPLY SUPERVISOR | EST |
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