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| LT1070 Datasheet, PDF (2/12 Pages) Linear Technology – 5A and 2.5A High Efficiency Switching Regulators | |||
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LT1070/LT1071
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage
Operating Junction Temperature Range
LT1070/LT1071 (Note 2) .................................... 40V
LT1070HV/LT1071HV (Note 2)........................... 60V
Switch Output Voltage
LT1070/LT1071 .................................................. 65V
LT1070HV/LT1071HV......................................... 75V
Feedback Pin Voltage (Transient, 1ms) ................ ±15V
Commercial (Operating) ....................... 0°C to 100°C
Commercial (Short Circuit)................... 0°C to 125°C
Industrial ......................................... â 40°C to 125°C
Military ............................................ â 55°C to 150°C
Storage Temperature Range ................ â 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
BOTTOM VIEW
VSW
1
2
4
3
VC
CASE
IS GND
VIN
FB
K PACKAGE
4-LEAD TO-3 METAL CAN
TJMAX = 100°C, θJA = 35°C/ W, QJC = 2°C (LT1070C, I)
TJMAX = 150°C, θJA = 35°C/ W, QJC = 2°C (LT1070M)
TJMAX = 100°C, θJA = 35°C/ W, QJC = 4°C (LT1071C, I)
TJMAX = 150°C, θJA = 35°C/ W, QJC = 4°C (LT1071M)
ORDER PART
NUMBER
LT1070CK
LT1070HVCK
LT1070HVMK
LT1070IK
LT1070MK
LT1071CK
LT1071HVCK
LT1071HVMK
LT1071MK
FRONT VIEW
5
VIN
4
VSW
3
GND
2
FB
1
VC
T PACKAGE
5-LEAD PLASTIC TO-220
TJMAX = 100°C, θJA = 75°C/ W, QJC = 2°C (LT1070C, I)
TJMAX = 100°C, θJA = 75°C/ W, QJC = 4°C (LT1071C)
ORDER PART
NUMBER
LT1070CT
LT1070HVCT
LT1070HVIT
LT1070IT
LT1071CT
LT1071HVCT
LT1071HVIT
LT1071IT
ELECTRICAL CHARACTERISTICS VIN = 15V, VC = 0.5V, VFB = VREF, output pin open unless otherwise specified.
SYMBOL
VREF
IB
gm
AV
IQ
PARAMETER
Reference Voltage
Feedback Input Current
Error Amplifier Transconductance
Error Amplifier Source or Sink Current
Error Amplifier Clamp Voltage
Reference Voltage Line Regulation
Error Amplifier Voltage Gain
Minimum Input Voltage
Supply Current
Control Pin Threshold
CONDITIONS
Measured at Feedback Pin, VC = 0.8V
VFB = VREF
âIC = ±25µA
VC = 1.5V
Hi Clamp, VFB = 1V
Lo Clamp, VFB = 1.5V
3V ⤠VIN ⤠VMAX, VC = 0.8V
0.9V ⤠VC ⤠1.4V
3V ⤠VIN ⤠VMAX, VC = 0.6V
Duty Cycle = 0
Normal/Flyback Threshold on Feedback Pin
MIN
1.224
q 1.214
q
3000
q 2400
150
q 120
1.80
0.25
q
500
q
0.8
q 0.6
0.4
TYP
1.244
1.244
350
4400
200
0.38
800
2.6
6
0.9
0.45
MAX
1.264
1.274
750
1100
6000
7000
350
400
2.30
0.52
0.03
3.0
9
1.08
1.25
0.54
UNITS
V
V
nA
nA
µmho
µmho
µA
µA
V
V
%/V
V/V
V
mA
V
V
V
2
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