A6902D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
A6902D
STMicroelectronics
'A6902D' PDF : 33 Pages View PDF
A6902D
Electrical characteristics
3
Electrical characteristics
TJ = -40 to 125 °C, VCC = 12 V, unless otherwise specified.
Table 4. Electrical characteristics
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VCC
RDS(on)
IL
fSW
Operating input voltage range
MOSFET on resistance
Maximum limiting current
Switching frequency
Duty cycle
V0 = 1.235 V; I0 = 2 A
VCC = 8.5 V (1)
VCC = 8.5 V, TJ = 25 °C
8
36
V
0.250 0.5
Ω
1.8
2.5
3.2
A
2
2.5
3.2
212
250
280
kHz
0
100
%
Dynamic characteristics (see test circuit)
V5
Voltage feedback
η
Efficiency
8 V < VCC < 36 V; 20 mA < I0 < 1 A
1.198 1.235 1.272
V
V0 = 5 V, VCC = 12 V
90
%
DC characteristics
Iqop
Total operating quiescent
current
3
5
mA
Iq
Quiescent current
Duty cycle = 0; VFB = 1.5 V
Error amplifier
2.7
mA
VOH
VOL
Io source
Io sink
Ib
High level output voltage
Low level output voltage
Source output current
Sink output current
Source bias current
DC open loop gain
gm
Transconductance
VOFFS
ICS+
Input offset voltage
CS+ output current
ICS-
CS- output current
VFB = 1 V
VFB = 1.5 V
VCOMP = 1.9 V; VFB = 1 V
VCOMP = 1.9 V; VFB = 1.5 V
RL = ∞
ICOMP = -0.1 mA to 0.1 mA;
VCOMP = 1.9 V
VCS- = 1.8 V; VCS+ = Vcomp
I0 =1 A; RSENSE= 100 mΩ;
VOUT < VCC - 2 V
I0 = 1 A; RSENSE = 100 mΩ;
VOUT < VCC - 2 V
Reference section
3.6
V
0.4
V
160
300
μA
1
1.5
mA
2.5
4
μA
50
58
dB
2.3
mS
90
100
110
mV
1.5
3
μA
1.5
3
μA
Reference voltage
Line regulation
Load regulation
Short circuit current
IREF = 0 to 5 mA; VCC = 8 V to 36 V
3.2
IREF = 0 mA; VCC = 8 V to 36 V
IREF = 0 to 5 mA
5
3.3 3.399
V
5
10
mV
8
15
mV
18
35
mA
1. With TJ = 85 °C, Ilim_min = 2 A, assured by design, characterization and statistical correlation.
DS5503 - Rev 6
page 4/33
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