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A6985F 数据表(PDF) 9 Page - STMicroelectronics

部件名 A6985F
功能描述  38 V 500 mA synchronous step-down switching regulator
PDF  77 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A6985F 数据表(HTML) 9 Page - STMicroelectronics

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A6985F
Electrical characteristics
77
Power consumption
ISHTDWN Shutdown current from VIN
VSS/INH = GND
4
8
15
A
IQ OPVIN Quiescent current from VIN
LCM - SWO
VREF < VFB < VOVP (SLEEP)
VBIAS = 3.3 V
(3)
410
15
A
LCM - NO SWO
VREF < VFB < VOVP (SLEEP)
VBIAS = GND
(3)
35
70
120
LNM - SWO
VFB = GND (NO SLEEP)
VBIAS = 3.3 V
0.5
1.5
5
mA
LNM - NO SWO
VFB = GND (NO SLEEP)
VBIAS = GND
22.8
6
IQ OPVBIAS Quiescent current from VBIAS
LCM - SWO
VREF < VFB < VOVP (SLEEP)
VBIAS = 3.3 V
(3)
25
50
115
A
LNM - SWO
VFB = GND (NO SLEEP)
VBIAS = 3.3 V
0.5
1.25mA
Soft-start
VINH
VSS threshold
SS rising
200
460
700
mV
VINH HYST VSS hysteresis
100
140
ISS CH
CSS charging current
VSS < VINH OR
t < TSS SETUP OR
VEA+ > VFB
(2)
1
A
t > TSS SETUP AND
VEA+ < VFB
(2)
4
VSS START
Start of internal error amplifier
ramp
0.995
1.1
1.150
V
SSGAIN
SS/INH to internal error
amplifier gain
3
Error amplifier
VOUT
Voltage feedback
3.3 V (A6985F3V3)
3.25
3.3
3.35
V
5 V (A6985F5V)
4.925
5.0
5.075
A6985F
0.841 0.85
0.859
IVOUT
VOUT biasing current
3.3 V (A6985F3V3)
4
6
8.5
A
5 V (A6985F5V)
7.5
10
13.5
A6985F
50
500
nA
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Note Min.
Typ.
Max.
Unit



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