MAX1951A Просмотр технического описания (PDF) - Maxim Integrated
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MAX1951A Datasheet PDF : 12 Pages
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1MHz, 2A, 2.6V to 5.5V Input, PWM DC-DC
Step-Down Regulator with Enable
Typical Operating Characteristics (continued)
(Typical values are at VIN = VCC = 5V, VOUT = 1.5V, IOUT = 1.5A, and TA = +25°C, unless otherwise noted. See Figure 2.)
STARTUP INTO PREBIASED
OUTPUT
MAX1951A toc11
EN
5V/div
VOUT = 3.3V
VOUT = 2.5V
LX
5V/div
VOUT
2V/div
1ms/div
SHUTDOWN WAVEFORMS
(VIN = 3.3V, VOUT = 2.5V, RL = 1.5I)
MAX1951A toc12
EN
2V/div
20Fs/div
LX
2V/div
VOUT
2V/div
SUPPLY CURRENT vs. INPUT VOLTAGE
8
7
6
5
4
3
2
1
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
FEEDBACK VOLTAGE
vs. TEMPERATURE
805
803
801
799
797
795
-40 -15
10
35
60
85
TEMPERATURE (NC)
CASE TEMPERATURE
vs. AMBIENT TEMPERATURE
180
160
140
120
100
80
60
40
20
0
-20
-40
-40 -15
10
35
60
85
AMBIENT TEMPERATURE (NC)
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