CA3277 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
CA3277 Datasheet PDF : 8 Pages
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CA3277
VBATT
250Ω
ICOUT
A
250Ω
VIGN IN
1KΩ
VCOUT
VDATA IN
VCIN
ICIN
1
BATT
16
IGN IN
9
CUR OUT
3
DATA IN
10
CUR IN
VEN
14
ENABLE
(OUT2)
CA3277
GND PINS 4,5,12,13
11
IGN
OUT
6
DATA
OUT
IEN
A
2
OUT1
8
RST
7
CRST
15
OUT2
GND
0.047
47KΩ
0 .01
VRST
0.47
CRST
0.047
VIGN OUT
VDATA OUT
FIGURE 4. CHARACTERISTIC EVALUATION AND TEST CIRCUIT
VOUT1
20µF
VOUT2
20µF
RL1
(LOAD)
IOUT1 =
VOUT1
RL1
RL2
(LOAD)
IOUT2 =
VOUT2
RL2
1 AND 2
5
16
TA = +25oC, NO LOAD
14
1) IGN IN TO BATT, ENABLE HIGH,
DATA IN THROUGH 250Ω TO BATT
12
2) IGN IN AND ENABLE TO GND
4
TA = +25oC
3
2
RL1 = 100Ω, RL2 = 62Ω
ENABLE HIGH, IGN IN TO BATT
2
1) VOUT1 vs VBATT
1
2) VOUT2 vs VBATT
1
0
0
5
15
20
INPUT VOLTAGE (V)
10
8
6
4
2
0
2.5 5
2
1
10
15
INPUT VOLTAGE (V)
20 22.5
FIGURE 4A. TYPICAL CHARACTERISTIC CURVES FOR OUT1
AND OUT2 OUTPUT VOLTAGE vs BATT VOLTAGE
INPUT
LOW VOLTAGE
DROPOUT
NORMAL
OPERATING RANGE
OVER-VOLTAGE
SHUTDOWN
FIGURE 4B. TYPICAL CHARACTERISTICS CURVES FOR NO-
LOAD BATT INPUT CURRENT vs BATT INPUT
VOLTAGE FOR OFF STATE IDLE CURRENTS
TA = +25oC, RL1 = 100Ω, RL2 = 62Ω
1) BATT TO 16V, ENABLE TO OUT1
0.5 2) BATT TO 11V, ENABLE TO OUT1
3) BATT TO 16V, ENABLE TO GND
0.4 4) BATT TO 11V, ENABLE TO GND
35 TA = +25oC, VBATT = 13.5V
30 CUR OUT THROUGH 250Ω TO BATT
ENABLE AND IGN IN TO BATT
25
0.3
1
0.2
2
0.1
3
4
20
15
TEST NOTE:
10
MEASUREMENTS MADE
AS VOLTAGE ON 50Ω LOAD
5
FROM CUR OUT TO 5V
0
0
0
5
10
15
20
0
0.1
0.2
0.3
0.4
IGN IN INPUT VOLTAGE (V)
CUR IN (PIN 10) - INPUT (SOURCED) CURRENT (mA)
FIGURE 4C. TYPICAL IGN IN CURRENT vs IGN IN INPUT VOLTAGE FIGURE 4D. TYPICAL CURRENT MULTIPLIER CURRENT GAIN
CHARACTERISTIC
7-45
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