Typical operating characteristics (continued) – Rainbow Electronics MAX15011 User Manual
Page 7
MAX15009/MAX15011
Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
_______________________________________________________________________________________
7
LDO OUTPUT VOLTAGE
vs. TEMPERATURE
MAX15009 toc10
TEMPERATURE (
°C)
-50
75
25
-25
125
50
0
100
150
5.10
5.05
5.00
4.95
4.90
4.85
4.80
V
OUT_LDO
(V)
I
OUT_LDO
= 10mA
I
OUT_LDO
= 100
μA
I
OUT_LDO
= 100mA
V
IN
= 8V
I
OUT_LDO
= 300mA
SWITCH LOAD-TRANSIENT RESPONSE
MAX15009 toc11
400
μs/div
V
OUT_LDO
5V, AC-COUPLED
100mV/div
V
OUT_SW
5V, AC-COUPLED
100mV/div
I
OUT_SW
100mA/div
0A
I
OUT_LDO
= 100mA
I
OUT_SW
= 100mA
LINE-TRANSIENT RESPONSE
MAX15009 toc13
40ms/div
V
OUT_LDO
3.3V, AC-COUPLED
20mV/div
V
OUT_SW
3.3V, AC-COUPLED
20mV/div
V
IN
10V/div
V
OUT_PROT
10V/div
0V
0V
LDO DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX15009 toc14
I
OUT_LDO
(mA)
0
200
100
300
1000
800
600
400
200
900
700
500
300
100
0
LDO DROPOUT VOLTAGE (mV)
LINE-TRANSIENT RESPONSE
MAX15009 toc12
40ms/div
V
OUT_LDO
3.3V, AC-COUPLED
50mV/div
V
OUT_SW
3.3V, AC-COUPLED
50mV/div
V
IN
20V/div
V
OUT_PROT
20V/div
0V
0V
SWITCH DROPOUT VOLTAGE
vs. TEMPERATURE
MAX15009 toc16
TEMPERATURE (
°C)
-45
105
130
5
30
55
-20
80
60
40
50
30
20
10
0
SWITCH DROPOUT VOLTAGE (mV)
I
OUT_LDO
= 10mA
I
OUT_SW
= 100mA
I
OUT_SW
= 10mA
SWITCH DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX15009 toc15
I
OUT_SW
(mA)
I
OUT_LDO
= 10mA
0
100
50
40
30
20
10
35
25
15
5
0
SWITCH DROPOUT VOLTAGE (mV)
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.)
STARTUP RESPONSE THROUGH V
IN
MAX15009 toc17
20ms/div
V
IN
20V/div
0V
0V
0V
0V
V
RESET
5V/div
V
OUT_LDO
5V/div
V
OUT_SW
5V/div
I
OUT_LDO
= 100mA
I
OUT_SW
= 70mA
EN_LDO = EN_SW = IN