MAX15009 Datasheet, PDF (6/23 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
(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 GROUND CURRENT
vs. LOAD CURRENT
90
T_A = -40°C
85
80 TA = +25°C
75
T_A = +85°C
70
65 ^{TA = +125°C}
60
55
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (mA)
LDO POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
I_{OUT_LDO} = 10mA
-90 ₁₀
100
1k
10k 100k 1M
FREQUENCY (Hz)
LDO OUTPUT VOLTAGE
vs. INPUT VOLTAGE
6
I_{OUT_LDO} = 10mA
5
I_{OUT_LDO} = 300mA
4
(PULSED)
3
LDO GROUND CURRENT
vs. LOAD CURRENT
140
130
T_A = +25°C
120 T_A = -40°C
110
100
90
T_A = +85°C
80
70
T_A = +125°C
60 _{0 25 50 75 100 125 150 175 200 225 250 275 300}
LOAD CURRENT (mA)
V_IN UVLO HYSTERESIS
vs. TEMPERATURE
400
350
300
250
200
150
100
-50 -25
0 25 50 75 100 125 150
TEMPERATURE (°C)
LDO LOAD-TRANSIENT RESPONSE
MAX15009 toc08
I_{OUT_LDO}
100mA/div
0A
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
35
30
25
20
15
10
5
0 _{-60 -40 -20 0 20 40 60 80 100 120 140}
TEMPERATURE (°C)
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
0
LDO LOAD REGULATION
100
200
300
I_{OUT_LDO} (mA)
LDO LOAD-TRANSIENT RESPONSE
MAX15009 toc09
I_{OUT_LDO}
100mA/div
0A
2
V_{OUT_LDO}
V_{OUT_LDO}
5V, AC-COUPLED
5V, AC-COUPLED
1
20mV/div
100mV/div
0
0 5 10 15 20 25 30 35 40
V_IN (V)
2ms/div
400μs/div
6 _______________________________________________________________________________________