Rainbow Electronics MAX8620 - Manual (Page 6)

MAX8620Y
µPMIC for Microprocessors or DSPs
in Portable Equipment
6 _______________________________________________________________________________________
OUT1/OUT2 VOLTAGE vs. INPUT VOLTAGE
MAX8620Y toc13
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
5.0 4.5 4.0 3.5
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
2.80
2.30
3.0 5.5
I LOAD = 0mA
I LOAD = 300mA
DROPOUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
250 200 50 100 150
50
100
150
200
250
300
350
400
0
0 300
MAX8620Y toc14
V
OUT_
= 3V
OUT1/OUT2 LOAD REGULATION vs. LOAD CURRENT
MAX8620Y toc15
LOAD CURRENT (mA)
LOAD REGULATION (%)
250 200 150 100 50
-1.3
-1.1
-0.9
-0.7
-0.5
-0.3
-0.1
-1.5
0 300
OUT1/OUT2 POWER-SUPPLY
RIPPLE REJECTION vs. FREQUENCY
MAX8620Y toc16
FREQUENCY (kHz)
POWER-SUPPLY RIPPLE REJECTION (dB)
100 10 1
10
20
30
40
50
60
70
80
0
0.1 1000
Typical Operating Characteristics (continued)
(V IN1 = V IN2 = 3.7V, PWR_ON = IN1, L = 2.2µH (LQH31CN2R2M53), C FF = 150pF, V OUT1 = V OUT2 = 2.6V, V OUT3 = 1.867V (R1 =
150k Ω, R2 = 75kΩ), C
IN
= 10µF, C
BP
= 0.01µF, C
OUT1
= C
OUT2
= 4.7µF, C
OUT3
= 2.2µF, RESET pulled up with 100k Ω to OUT1,
T A = +25°C, unless otherwise noted.)