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A7986ATR 数据表(PDF) 6 Page - STMicroelectronics

部件名 A7986ATR
功能描述  3 A step-down switching regulator for automotive applications
PDF  42 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A7986ATR 数据表(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
A7986A
6/42
DocID022801 Rev 5
4
Electrical characteristics
TJ = - 40 °C to 125 °C, VCC = 12 V, unless otherwise specified.
Table 4. Electrical characteristics
Symbol
Parameter
Test conditions
Values
Unit
Min.
Typ.
Max.
VCC
Operating input voltage
range
4.5
38
V
VCCON
Turn-on VCC threshold
4.5
VCCHYS
VCC UVLO hysteresis
0.1
0.4
RDS(on)
MOSFET on-resistance
200
400
m
Ω
ILIM
Maximum limiting current
TJ = 25 °C
3.7
5.2
A
3.5
5.2
Oscillator
FSW
Switching frequency
210
250
275
KHz
VFSW
FSW pin voltage
1.254
V
D
Duty cycle
0
100
%
FADJ
Adjustable switching
frequency
RFSW = 33 kΩ
1000
KHz
Dynamic characteristics
VFB
Feedback voltage
4.5 V< VCC < 38 V
0.588
0.6
0.612
V
DC characteristics
IQ
Quiescent current
Duty cycle = 0,
VFB = 0.8 V
2.4
mA
IQST-BY
Total standby quiescent
current
20
30
μA
Enable
VEN
EN threshold voltage
Device OFF level
0.3
V
Device ON level
1.2
IEN
EN current
EN = VCC
7.5
10
μA
Soft-start
TSS
Soft-start duration
FSW pin floating
7.3
8.2
9.8
ms
FSW = 1 MHz,
RFSW = 33 kΩ
2
Error amplifier



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