MAX15009 Datasheet, PDF (9/23 Pages) Maxim Integrated Products – Automotive 300mA LDO Regulators with Switched Output and Overvoltage Protector

Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
Typical Operating Characteristics (continued)
(V_IN = V_{EN_LDO} = V_{EN_PROT} = V_{EN_SW} = +14V, C_IN = 10µF, C_{OUT_LDO} = 22µF, C_{OUT_SW} = 1µF, V_{OUT_LDO} = +5V, FB_LDO = SGND,
T_A = +25°C, unless otherwise specified.)
OVERVOLTAGE SWITCH FAULT
MAX15009 toc26
OVERVOLTAGE LIMIT FAULT
MAX15009 toc27
RESET TIMEOUT DELAY
vs. C_RESET
7
V_IN
10V/div
V_GATE
20V/div
V_{OUT_PROT}
20V/div
I_{OUT_PROT} = 1A
V_OV = 25V
400μs/div
V_IN
20V/div
0V
V_GATE
20V/div
I_{OUT_PROT} = 1A
0V
OV THRESHOLD = 35V
V_{OUT_PROT}
20V/div
0V
40ms/div
6
0V
5
4
3
2
0V
1
0V
0
0
2
4
6
8
10
C_RESET (nF)
RESET TIMEOUT DELAY
vs. TEMPERATURE
2.0
1.8
1.6
1.4
C_RESET = 2.2nF
1.2
1.0
0.8
0.6
0.4
C_RESET = 220pF
0.2
0
-50 -25
0 25 50 75 100 125 150
TEMPERATURE (°C)
SWITCH CURRENT LIMIT
vs. ILIM RESISTANCE
200
180
T_A = +125°C
160
140
120
T_A = -40°C
100
T_A = +85°C
80
60
T_A = +25°C
40
20
20 40 60 80 100 120 140 160 180 200
ILIM RESISTANCE (kΩ)
INTERNAL PRESET SWITCH CURRENT LIMIT
vs. TEMPERATURE
250
240
230
220
210
200
190
180
170
160
150
-50 -25
0 25 50 75 100 125 150
TEMPERATURE (°C)
I_{OC_DELAY_UP} AND I_{OC_DELAY_DOWN}
vs. TEMPERATURE
18
16
I_{OC_DELAY_DOWN}
14
12
10
8
6
4
2
I_{OC_DELAY_UP}
0
-50 -25
0 25 50 75 100 125 150
TEMPERATURE (°C)
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