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| AMC7660 Datasheet, PDF (3/11 Pages) ADDtek Corp – DC - DC CONVERTER CONTROL CIRCUIT | |||
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AMC7660
RECOMMENDED OPERATING CONDITIONS
Parameter
Comparator Input Voltage
Switch Collector Voltage
Switch Emitter Voltage (VPin1=40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current (Note 1)
Switch Current
Oscillator Timing Capacitor (connected to CT pin)
Operating Ambient Temperature Range
Note 1: Maximum package power dissipation limits must be observed.
Symbol
VIR
VOC1
VE1
VCE1
VC2
IC2
ISWITCH
CT
TA
Recommended Operating
Min.
Typ.
Max.
-0.3 to + 40
40
40
40
40
100
1.5
1.0
0 to +70
ELECTRICAL CHARACTERISTICS
VCC=5.0 V, TA=0 OC to 70 OC, unless otherwise specified.
Parameter
Symbol
Test Conditions
AMC7660
Min. Typ. Max.
OSCILLATOR
Frequency
Charge Current
Discharge Current
Discharge to Charge Current Ratio
Current Limit Sense Voltage
OUTPUT SWITCH
Fosc
Ichg
Idischg
Idischg/Ichg
VIS
VIN- = 0 V, CT = 1.0 nF, TA = 25 OC
VCC = 5.0 V to 40 V, TA = 25 OC
VCC = 5.0 V to 40 V, TA = 25OC
IS to VCC, TA = 25 OC
Ichg = Idischg, TA = 25 OC
24 33 42
24 35 42
140 220 260
5.2 6.5 7.5
250 300 350
Saturation Voltage, Darlington Connection
Saturation Voltage
DC Current Gain
Collector Offï¼State Current
COMPARATOR
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
TOTAL DEVICE
VCE1(sat)
VCE1(sat)
hFE
IC(off)
ISW = 1.0 A, OC1, OC2 connected
ISW = 1.0 A, 82 ⦠connected from
OC2 to VCC, Forced β = 20
ISW = 1.0 A, VCE = 5.0 V, TA = 25
OC
VCE = 40 V
Vth
Vth(line)
IIB
TA = 25 OC
TA =0 OC to 70 OC
VCC = 3.0 V to 40 V
VIN- = 0 V
- 0.9 1.3
- 0.4 0.7
50 75 -
- 0.01 100
1.23 1.25 1.27
1.22 - 1.28
- 1.4 5.6
- -20 -400
Supply current
VCC = 5.0 V to 40 V,
ICC
CT = 1.0nF, Pin 7 = VCC,
VIN- > Vth, Pin 2= Gnd, remaining
pins open
- 3.0 3.9
Units
V
V
V
V
V
mA
A
nF
°C
Units
KHz
µA
µA
-
mV
V
V
-
µA
V
mV
nA
mA
Copyright © 2006 ADDtek Corp.
3
DD057_C -- JUNE 2006
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