MAX1515 Datasheet, PDF (10/24 Pages) Maxim Integrated Products – Low-Voltage, Internal Switch, Step-Down/DDR Regulator

Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
Typical Operating Characteristics (continued)
(MAX1515 Circuit of Figure 1, V_IN = 2.5V, V_DD = V_CC = SHDN = MODE = 3.3V, T_A = +25°C, unless otherwise noted.)
2.5V
0
0
2A
0
-2A
1.25V
DDR-MODE LOAD TRANSIENT
MAX1515 toc17
A
B
C
D
A: LX, 2V/div
B: LOAD CONTROL,
5V/div
SKIP = GND
20μs/div
C: INDUCTOR CURRENT, 2A/div
D: OUTPUT VOLTAGE, 50mV/div
2.5V
0
0
2A
0
-2A
1.25V
DDR-MODE LOAD TRANSIENT
MAX1515 toc18
A
B
C
D
A: LX, 2V/div
B: LOAD CONTROL,
5V/div
SKIP = GND
20μs/div
C: INDUCTOR CURRENT, 2A/div
D: OUTPUT VOLTAGE, 50mV/div
REFIN TRANSITION
MAX1515 toc19
3.3V
0
A
1.5V
B
1.0V
1.5V
C
1.0V
2A
0A
D
-2A
A: PGOOD, 5V/div
B: REFIN, 0.5V/div
SKIP = GND
50μs/div
C: OUTPUT VOLTAGE, 0.5V/div
D: INDUCTOR CURRENT, 2A/div
+10mA
-10mA
REFOUT LOAD TRANSIENT
MAX1515 toc20
A
1.26V
1.25V
B
1.24V
10μs/div
A: REFOUT LOAD, 20mA/div B: REFOUT VOLTAGE, 10mV/div
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