Rainbow Electronics MAX8737 - Manual (Page 6)

MAX8737
Dual, Low-Voltage Linear Regulator Controllers
with External MOSFETs
6 _______________________________________________________________________________________
DRV TRANSCONDUCTANCE
DISTRIBUTION
MAX8737 toc13
TRANSCONDUCTANCE (S)
SAMPLE PERCENTAGE (%)
1.3 1.0 0.8
10
20
30
40
50
0
0.5 1.5
SAMPLE SIZE = 150
OUT1
OUT2
OUTPUT-VOLTAGE DEVIATION
vs. TEMPERATURE
MAX8737 toc14
TEMPERATURE ( °C)
OUTPUT-VOLTAGE DEVIATION (mV)
60 35 10 -15
-2
-1
0
1
2
3
-3
-40 85 0.1 1 10 0.001 0.01
GAIN AND PHASE
(OUT1)
60
MAX8737 toc15
20
0 GAIN (dB)
PHASE (
°)
40
-20
180
0
-90
90
-180
FREQUENCY (MHz)
1.5V OUTPUT, 1A LOAD, C OUT = (1) 10 µF 1206 16V CERAMIC
0.1 1 10 0.001 0.01
GAIN AND PHASE
(OUT2)
60
MAX8737 toc16
20
0 GAIN (dB)
PHASE (
°)
40
-20
180
0
-90
90
-180
FREQUENCY (MHz)
1.05V OUTPUT, 2A LOAD, C OUT = (1) 22 µF 1206 6V CERAMIC
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
2 µs/div
FOLDBACK CURRENT LIMIT
(SHORT-CIRCUIT RESPONSE)
10V
C
A
D
MAX8737 toc10
1.50V
5V
3V
20A
0
A. GATE OF FET LOAD, 10V/div
B. DRV1, 1V/div
C. MOSFET CURRENT, 20A/div D. LD01 OUTPUT
VOLTAGE, 2V/div
E. PGOOD1, 5V/div
B
0
0
0
1.5V
E
OUTPUT OFFSET VOLTAGE
DISTRIBUTION
MAX8737 toc11
OUTPUT OFFSET VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
3 0 -3
10
20
30
40
50
0
-5 5
SAMPLE SIZE = 150
OUT1
OUT2
CURRENT-LIMIT THRESHOLD
DISTRIBUTION
MAX8737 toc12
CURRENT LIMIT (mV)
SAMPLE PERCENTAGE (%)
11.3 10.0 8.8
10
20
30
40
50
0
7.5 12.5
SAMPLE SIZE = 150
OUT1
OUT2