CA3277 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
CA3277 Datasheet PDF : 8 Pages
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Specifications CA3277
Absolute Maximum Ratings
Thermal Information
Max. BATT, IGN IN Input Voltage (Note1) . . . . . . . . . . . . . . . ±26V
Max. Operating Voltage; BATT, IGN IN . . . . . . . VBATT(SD) (~20.5V)
Max. Positive Voltages: (For Negative Voltages, Note 2)
ENABLE Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VBATT
DATA IN Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VBATT
CUR OUT, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VBATT
RESET, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VBATT
Max. Operating Load Current, OUT1 . . . . . . . . . . . . . . . . . . . 100mA
Max. Operating Load Current, OUT2 . . . . . . . . . . . . . . . . . . . 100mA
Max. Current Mult. Load Currents:
Min. Load Resistance, CUR OUT . . 225Ω to BATT (75mA max)
Min. Load Resistance, CUR IN . . . . . . 1KΩ to GND (-5mA max)
Max. Load Current OUT1, OUT2 (Short Duration) . . . Self-Limiting
Max. Plus/Minus Load Currents: (Note 3)
IGN OUT Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
DATA OUT Output . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
RESET Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
Thermal Resistance
θJA
θJL
Plastic DIP Package . . . . . . . . . . . . . . . . 60oC/W 12oC/W
(Temp. meas. on center lead next to case)
Power Dissipation, PD (Note 4):
Up to +60oC (Free Air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5W
Above +60oC: . . . . . . . . . . . . . . . . Derate Linearly at 16.6mW/oC
Up to +85oC w/heat sink (PC Board): . . . . . . . . . . . . . . . . . 1.6 W
Operating Temperature Range . . . . . . . . . . . . . . . . . -40oC to +85oC
Storage Temperature Range. . . . . . . . . . . . . . . . . . -55oC to +150oC
Max. Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . +150oC
Lead Temperature (During Solder) . . . . . . . . . . . . . . . . . . . . +265oC
1/16 ± 1/32” from case, 10s max
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications TA = -40oC to +85oC, VBATT = 13.5V, ENABLE ON (VEN = 3.5V), IGN IN connected to BATT, OUT1 and
OUT2 bypassed with 20µF to GND, DATA IN connected through 250Ω to BATT, LOADS: OUT1 = 50mA,
OUT2 = 80mA; Unless Otherwise Specified (Refer to Figure 4 Test Circuit)
PARAMETERS
REGULATOR OUTPUT1
Output Voltage
Dropout Voltage (Note 5)
Line Reg
Load Reg
Current Limiting
Low Voltage Shutdown
REGULATOR OUTPUT2
Output Voltage
Dropout Voltage (Note 5)
Line Reg
Load Reg
Current Limiting
ENABLE Input Current
ENABLE Input Sw. Thd.
CURRENT MULTIPLIER
Current Mult. Gain, (ICOUT/ICIN)
Current Mult. Output Sat.
Current Mult., Max. Drive Cur.
RESET
Reset, (RST) Threshold
Reset Delay Time (Note 6)
RESET Out High
RESET Low
RESET Output Sink Current
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VOUT1
VDO1
VBATT = 9V to 16V
VBATT = 4.75V
VBATT = 6.2V to 16V
ILOAD = 0.5mA to 50mA
4.75 5 5.25
V
4.15 4.6
-
V
-
9
40
mV
-
30
60
mV
-
170 250 mA
Ramp VBATT Down Until OUT1 drops (PNP Driv- -
3.5
-
V
er Cutoff)
VOUT2
VDO2
VBATT = 9V to 16V
VBATT = 5.6V
VBATT = 6.2V to 16V
ILOAD = 0.5mA to 80mA
IEN
VEN(THD)
VEN = 5V
Ramp ENABLE Input Up Until OUT2 is
Switched ON
4.75 5 5.25
V
4.6
5
-
V
-
7.5 40
mV
-
35
60
mV
-
190 250 mA
-
50 150
µA
-
1.2
-
V
ICIN = -200µA
80 100
-
Gain
Ratio
VCOUT(SAT) ICIN = -200µA, CUR OUT Load = 1KΩ to VBATT -
0.3
1
V
ICOUT(MAX) ICIN = -700µA
35
50
-
mA
tRST
VOH(RST)
VOL(RST)
IOL
Ramp VBATT Down, Measure VBATT when
RESET (VRST) goes low
CRST Cap. = 0.47µF, VBATT = 6.8V
RESET Load = 5KΩ to OUT1
47KΩ to OUT1
VBATT = 3.75V, RST 47KΩ to OUT1
CRST to GND, VBATT = 6.8V
3.8 4.2 4.5
V
50 150 250
ms
4
-
-
V
-
-
0.2
V
-
8
-
mA
7-40
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