L5970D 查看數據表（PDF） - STMicroelectronics
零件编号
产品描述 (功能)
生产厂家
L5970D Datasheet PDF : 16 Pages
| |||
L5970D
3
Electrical characteristics
Electrical characteristics
Table 4. Electrical characteristics ( TJ = 25°C, VCC = 12V, unless otherwise specified)
Symbol
Parameter
Test condition
Min Typ Max Unit
VCC
Operating input
voltage range
Vo = 1.235V; Io = 2A (1) 4.4
36
V
RDS(on)
Mosfet on
Resistance
(1)
0.250 0.5 Ω
Il
Maximum limiting
current
VCC = 4.4V to 36V
1.5 1.87 2.25 A
fs
Switching frequency
(1) 212 250 280 KHz
225 250 275 KHz
Duty cycle
0
100 %
Dynamic characteristics (see test circuit ).
V5
Voltage feedback
4.4V < VCC < 36V,
20mA < IO < 2A
1.220 1.235 1.25 V
(1) 1.198 1.235 1.272 V
h
Efficiency
VO = 5V, VCC = 12V
90
%
DC characteristics
Iqop
Total operating
quiescent current
(1)
Iq
Quiescent current
Duty cycle = 0;
VFB = 1.5V
Vinh > 2.2V
(1)
Iqst-by
Total stand-by
quiescent current
VCC = 36V;
(1)
Vinh > 2.2V
3
5 mA
2.5 mA
50 100 µA
80 150 µA
Inhibit
INH threshold
voltage
Device ON
Device OFF
0.8 V
2.2
V
Error amplfier
VOH
VOL
Io source
Io sink
High level output
voltage
Low level output
voltage
Source output
current
Sink output current
VFB = 1V
VFB = 1.5V
VCOMP = 1.9V;
VFB = 1V
VCOMP = 1.9V;
VFB = 1.5V
3.5
V
0.4 V
200 300
µA
1 1.5
mA
5/16
Share Link: 