MAX15009 Datasheet, PDF (7/23 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.)
LDO OUTPUT VOLTAGE
vs. TEMPERATURE
5.10
5.05 ^IOUT_LDO ^{= 100μA}
5.00
I_{OUT_LDO} = 10mA
I_{OUT_SW}
100mA/div
4.95
I_{OUT_LDO} = 100mA
4.90
I_{OUT_LDO} = 300mA
4.85
V_{OUT_SW}
5V, AC-COUPLED
100mV/div
V_{OUT_LDO}
5V, AC-COUPLED
100mV/div
4.80
-50 -25
V_IN = 8V
0 25 50 75 100 125 150
TEMPERATURE (°C)
SWITCH LOAD-TRANSIENT RESPONSE
MAX15009 toc11
V_IN
20V/div
0A
V_{OUT_LDO}
3.3V, AC-COUPLED
50mV/div
V_{OUT_SW}
3.3V, AC-COUPLED
50mV/div
I_{OUT_LDO} = 100mA
I_{OUT_SW} = 100mA
V_{OUT_PROT}
20V/div
400μs/div
LINE-TRANSIENT RESPONSE
MAX15009 toc12
0V
0V
40ms/div
V_IN
10V/div
V_{OUT_LDO}
3.3V, AC-COUPLED
20mV/div
V_{OUT_SW}
3.3V, AC-COUPLED
20mV/div
V_{OUT_PROT}
10V/div
LINE-TRANSIENT RESPONSE
MAX15009 toc13
0V
0V
40ms/div
1000
900
800
700
600
500
400
300
200
100
0
0
LDO DROPOUT VOLTAGE
vs. LOAD CURRENT
100
200
300
I_{OUT_LDO} (mA)
SWITCH DROPOUT VOLTAGE
vs. LOAD CURRENT
40
35
30
25
20
15
10
5
I_{OUT_LDO} = 10mA
0
0
50
100
I_{OUT_SW} (mA)
SWITCH DROPOUT VOLTAGE
vs. TEMPERATURE
60
I_{OUT_LDO} = 10mA
50
40
30
I_{OUT_SW} = 100mA
STARTUP RESPONSE THROUGH V_IN
MAX15009 toc17
V_IN
20V/div
0V
I_{OUT_LDO} = 100mA
V_RESET
5V/div
I_{OUT_SW} = 70mA
EN_LDO = EN_SW = IN
0V
20
I_{OUT_SW} = 10mA
10
0
-45 -20
5 30 55 80 105 130
TEMPERATURE (°C)
V_{OUT_LDO}
5V/div
0V
V_{OUT_SW}
5V/div
0V
20ms/div
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