Typical operating characteristics – Rainbow Electronics MAX8902B User Manual
Page 4
MAX8902A/MAX8902B
Low-Noise 500mA LDO Regulators
in a 2mm x 2mm TDFN Package
4
_______________________________________________________________________________________
Typical Operating Characteristics
(MAX8902A, V
IN
= 3.6V, V
OUT
= 2.5V, T
A
= +25°C, unless otherwise noted.)
0
40
20
80
60
120
100
140
0
2
3
1
4
5
QUIESCENT CURRENT
EN = HIGH, NO LOAD
MAX8902A/02B toc01
INPUT VOLTAGE (V)
INPUT CURRENT (
μ
A)
2.500
2.502
2.501
2.504
2.503
2.505
2.506
0
200
100
300
400
500
LOAD REGULATION
MAX8902A/02B toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
3.6V INPUT
2.490
2.496
2.494
2.492
2.498
2.500
2.502
2.504
2.506
2.508
2.510
1.5
2.5
3.5
4.5
5.5
LINE REGULATION
MAX8902A/02B toc03
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
200mA LOAD
40ms/div
LOAD TRANSIENT RESPONSE
50mA TO 500mA TO 50mA
V
OUT
100mV/div
200mA/div
MAX8902A/02B toc04
I
OUT
t
RISE
= t
FALL
= 1
μs
10
μs/div
LOAD TRANSIENT RESPONSE
V
IN
2V/div
2mV/div
MAX8902A/02B toc05
V
OUT
2.5V OUTPUT
5
Ω LOAD
5V
4V
5V
100
μs/div
STARTUP WAVEFORM
V
EN
500mV/div
2V/div
200mA/div
MAX8902A/02B toc06
I
IN
V
OUT
5
Ω LOAD
C
BYP
= 0.01
μF
0
10
20
30
40
50
60
70
80
0
100
200
300
400
500
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX8902A/02B toc07
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
3.6V INPUT, 4.6V OUTPUT PRESET
THE SLOPE OF THE LINE INDICATES
A 129m
Ω ON-RESISTANCE IN
DROPOUT
PSRR vs. FREQUENCY
MAX8902A/02B toc08
10k
1k
100
10
100k
FREQUENCY (Hz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
PSRR (dB)
MAX8902A LDO OUTPUT-NOISE SPECTRAL
DENSITY vs. FREQUENCY
MAX8902A/02B toc09
FREQUENCY (Hz)
100k
10k
1k
100
100E+0
1E+3
10E+3
10E+0
10
1M
NOISE DENSITY (nV
√
Hz)