MAX6471 MAXIM [Maxim Integrated Products], MAX6471 Datasheet - Page 5

• Manufacturer Part Number: MAX6471
• Description: 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
IN
125
100
75
50
25
= 5V, V
0
0
DROPOUT VOLTAGE vs. LOAD CURRENT
V
V
I
LOAD
IN
OUT
V
C
OUT
OUT
= 4.5V
= 3.3V
= 100mA
50
OUT
= 3.3V
= 3.3µF
STARTUP RESPONSE
LOAD CURRENT (mA)
= 3.3V, C
100
OUTPUT NOISE
300mA LDO Linear Regulators with Internal
500µs/div
10µs/div
_______________________________________________________________________________________
150
OUT
200
= 3.3µF, T
MAX6469 toc07
250
MAX6469 toc10
300
100µV/div
A
V
2V/div
V
2V/div
IN
OUT
= +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
100
-10
-20
-30
-40
-50
-60
80
60
40
20
0
0
0.01
10
Microprocessor Reset Circuit
V
C
I
V
V
I
LOAD
OUT
OUT
OUT
IN
OUT
OUTPUT NOISE vs. FREQUENCY
= 2.5V
= 100mA
LOAD-TRANSIENT RESPONSE
= 3.3V
= 3.3µF
= 1.5V
= 30mA
0.1
100
PSRR vs. FREQUENCY
FREQUENCY (kHz)
FREQUENCY (Hz)
1
100µs/div
1k
10
10k
100
MAX6469 toc11
1000
100k
V
20mV/div
OUT
5
4
3
2
1
0
0
STABLE REGION
I
REGION OF STABLE C
LOAD
LOAD-TRANSIENT RESPONSE
50
SHUTDOWN RESPONSE
= 50mA
C
vs. LOAD CURRENT
C
OUT
LOAD CURRENT (mA)
NEAR DROPOUT
100
OUT
= 3.3µF
= 4.7µF
10µs/div
20ms/div
150
200
OUT
V
V
I
LOAD
IN
OUT
= 5V
ESR
= 3.3V
= 100mA
MAX6469 toc12
250
MAX6469 toc09
300
5
V
5mV/div
V
5V/div
V
2V/div
OUT
SHDN
OUT