L5970AD 데이터 시트보기 (PDF) - STMicroelectronics
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L5970AD Datasheet PDF : 11 Pages
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L5970AD
Table 5. Electrical Characteristics (Tj = 25°C, VCC = 12V, unless otherwise specified.)
Symbol
Parameter
VCC Operating input voltage range
RDSON Mosfet on Resistance
Il
Maximum limiting current
fs
Switching frequency
Duty cycle
DYNAMIC CHARACTERISTICS
V5 Voltage feedback
η
Efficiency
DC CHARACTERISTICS
Iqop Total Operating Quiescent Current
Iq
Quiescent current
Iqst-by Total stand-by quiescent current
INHIBIT
INH Threshold Voltage
ERROR AMPLIFIER
VOH High level output voltage
VOL Low level output voltage
Io source Source output current
Io sink Sink output current
Ib
Source bias current
DC open loop gain
gm Transconductance
SYNC FUNCTION
High Input Voltage
Low Input Voltage
Slave Sink Current
Master Output Amplitude
Output Pulse Width
REFERENCE SECTION
Reference Voltage
Line Regulation
Load Regulation
Short Circuit Current
Note: 1. Guaranteed by design
Test Condition
VCC = 4.4V to 36V
4.4V < VCC < 36V
VO = 5V, VCC = 12V
Duty Cycle = 0; VFB = 1.5V
Vinh > 2.2V
Device ON
Device OFF
VFB = 1V
VFB = 1.5V
VCOMP = 1.9V; VFB = 1V
VCOMP = 1.9V; VFB = 1.5V
RL = ∞
Icomp = -0.1mA to 0.1mA
VCOMP = 1.9V
VCC = 4.4V to 36V
VCC = 4.4V to 36V
Vsync = 0.74V (1)
Vsync = 2.33V
Isource = 3mA
no load, Vsync = 1.65V
IREF = 0 to 5mA
VCC = 4.4V to 36V
IREF = 0mA
VCC = 4.4V to 36V
IREF = 0 to 5mA
Min.
4.4
0
Typ.
0.250
1.8
500
Max.
36
0.5
100
1.220 1.235 1.25
90
5
7
2.7
50 100
0.8
2.2
3.5
0.4
200 300
1
1.5
2.5
4
50 57
2.3
2.5
0.11
0.21
2.75
0.20
3
0.35
VREF
0.74
0.25
0.45
3.234 3.3 3.366
3.2 3.3 3.399
5
10
8
15
10 18 30
Unit
V
Ω
A
KHz
%
V
%
mA
mA
µA
V
V
V
V
µA
mA
µA
dB
mS
V
V
mA
mA
V
µs
V
V
mV
mV
mA
3/11
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