ca3277 Intersil Corporation, ca3277 Datasheet - Page 2

• Manufacturer Part Number: ca3277
• Description: Dual 5v Regulator With Serial Data Buffer Interface For Microcontroller Applications
• Manufacturer: Intersil Corporation

Absolute Maximum Ratings
Max. BATT, IGN IN Input Voltage (Note1) . . . . . . . . . . . . . . .
Max. Operating Voltage; BATT, IGN IN . . . . . . . V
Max. Positive Voltages: (For Negative Voltages, Note 2)
Max. Operating Load Current, OUT1 . . . . . . . . . . . . . . . . . . . 100mA
Max. Operating Load Current, OUT2 . . . . . . . . . . . . . . . . . . . 100mA
Max. Current Mult. Load Currents:
Max. Load Current OUT1, OUT2 (Short Duration) . . . Self-Limiting
Max. Plus/Minus Load Currents: (Note 3)
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
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, (I
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
ENABLE Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
DATA IN Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
CUR OUT, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
RESET, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
Min. Load Resistance, CUR OUT . . 225 to BATT (75mA max)
Min. Load Resistance, CUR IN . . . . . . 1K to GND (-5mA max)
IGN OUT Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
DATA OUT Output . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
RESET Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Self-Limiting
PARAMETERS
COUT
/I
CIN
)
T
OUT2 bypassed with 20 F to GND, DATA IN connected through 250 to BATT, LOADS: OUT1 = 50mA,
OUT2 = 80mA; Unless Otherwise Specified (Refer to Figure 4 Test Circuit)
A
= -40
V
I
SYMBOL
COUT(MAX)
V
V
V
COUT(SAT)
o
V
V
OH(RST)
EN(THD)
OL(RST)
C to +85
V
V
t
OUT1
OUT2
I
RST
I
DO1
DO2
EN
OL
BATT(SD)
Specifications CA3277
o
C, V
V
V
V
I
Ramp V
er Cutoff)
V
V
V
I
V
Ramp ENABLE Input Up Until OUT2 is
Switched ON
I
I
I
Ramp V
RESET (V
CRST Cap. = 0.47 F, V
RESET Load = 5K to OUT1
47K to OUT1
V
CRST to GND, V
LOAD
LOAD
CIN
CIN
CIN
BATT
BATT
BATT
BATT
BATT
BATT
EN
BATT
BATT
(~20.5V)
= -200 A
= -200 A, CUR OUT Load = 1K to V
= -700 A
= 5V
= 0.5mA to 50mA
= 0.5mA to 80mA
= 9V to 16V
= 4.75V
= 6.2V to 16V
= 9V to 16V
= 5.6V
= 6.2V to 16V
= 3.75V, RST 47K to OUT1
= 13.5V, ENABLE ON (V
BATT
BATT
BATT
BATT
BATT
BATT
26V
RST
7-40
Down Until OUT1 drops (PNP Driv-
Down, Measure V
) goes low
Thermal Information
Thermal Resistance
Power Dissipation, P
Operating Temperature Range . . . . . . . . . . . . . . . . . -40
Storage Temperature Range. . . . . . . . . . . . . . . . . . -55
Max. Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . +150
Lead Temperature (During Solder) . . . . . . . . . . . . . . . . . . . . +265
CONDITIONS
1/16
BATT
Plastic DIP Package . . . . . . . . . . . . . . . .
(Temp. meas. on center lead next to case)
Up to +60
Above +60
Up to +85
= 6.8V
1/32” from case, 10s max
BATT
o
o
C (Free Air). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5W
o
C w/heat sink (PC Board): . . . . . . . . . . . . . . . . . 1.6 W
= 6.8V
C: . . . . . . . . . . . . . . . . Derate Linearly at 16.6mW/
BATT
EN
= 3.5V), IGN IN connected to BATT, OUT1 and
when
D
(Note 4):
BATT
4.75
4.15
4.75
MIN
4.6
3.8
80
35
50
4
-
-
-
-
-
-
-
-
-
-
-
-
TYP
170
190
100
150
4.6
3.5
7.5
1.2
0.3
4.2
30
35
50
50
5
9
5
5
8
-
-
60
o
JA
C/W
MAX
5.25
5.25
250
250
150
250
4.5
0.2
40
40
60
60
1
-
-
-
-
-
-
-
-
o
C to +150
o
C to +85
12
UNITS
Ratio
Gain
mV
mV
mA
mV
mV
mA
mA
mA
o
ms
V
V
V
V
V
V
V
V
V
V
JL
C/W
A
o
o
o
o
o
C
C
C
C
C