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KA3846 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. KA3846
Description  SMPS Controller
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA3846 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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KA3846
4
Electrical Characteristics
(VCC=15V, TA=0°C to + 70°C, unless otherwise specified)
Notes :
1. Parameter measured at trip point at latch with V5 = VREF, V6 = 0V
2. RT = 10K
Ω, CT = 4.7nF
3. Amplifier gain definde as:
4. Current into Pin 1 guaranteed to latch circuit in shutdown state.
5. Current into Pin 1 guaranteed not to latch circuit in shutdown state.
6. These parameters, although guaranteed over the recommended operating conditions, are not 100% tested in production.
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
CURRENT LIMIT ADJUST SECTION
Current Limit Offset Voltage (Note 1)
VIO(C.L)
V3 = 0V
V4 = 0V, Pin 7 open
0.45
0.5
0.55
V
Input Bias Current
IBIAS
V5 = VREF, V6 = 0V
-
- 10
- 30
uA
SHUTDOWN TERMINAL SECTION
Threshold Voltage
VTH
-
250
350
400
mV
Input Voltage Range
VI
-
0-
VCC
V
Minimum Latching Current (Note 4)
I(LATCH,MIN)
-
3.0
1.5
-
mA
Maximum Non-Latching Current (Note 5) I(NONLATCH,MAX)
-
-1.5
0.8
mA
UNDER-VOLTAGE LOCKOUT SECTION
Start Threshold
VTH(ST)
-
77.7
8.4
V
Threshold Hysteresis
VHYS
-
0.45
0.75
1.05
V
OUTPUT SECTION
Collector-Emitter Voltage
VCEO
-
40
-
-
V
Collector Leakage Current
ILEAK
VC = 40V
-
-
200
uA
Low Output Voltage 1
VOL 1
ISINK = 20mA
-
0.1
0.4
V
Low Output Voltage 2
VOL 2
ISINK = 100mA
-
0.4
2.1
V
High Output Voltage 1
VOH 1
ISOURCE = 20mA
13
13.5
-
V
High Output Voltage 2
VOH 2
ISOURCE = 100mA
12
13.5
-
V
Rise Time (Note 6)
tR
CL = 1nF, TJ = 25
°C
-
50
300
us
Fall Time (Note 6)
tF
CL = 1nF, TJ = 25
°C
-
50
300
us
TOTAL STANDBY CURRENT
Supply Current
ICC
-
-17
21
mA
G
∆V7
∆V4
-----------
∆V
4
0to1.0V
=
;
=


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