MAX15022_11 Datasheet, PDF (7/28 Pages) Maxim Integrated Products – Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers

Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
Typical Operating Characteristics (continued)
(V_AVIN = V_DVDD1 = V_DVDD2 = V_PVIN1 = V_PVIN2 = 5V, V_OUT1 = 3.3V, V_OUT2 = 1.5V, V_{PGND_} = 0V, R_T = 16.5kΩ. T_A = +25°C, unless
otherwise noted.)
CHANNEL 1 LOAD STEP RESPONSE
MAX15022 toc15
EN2 = 0V
VPVIN1
5V/div
0V
VOUT1
3.3V, AC-COUPLED
100mV/div
CHANNEL 1 LOAD STEP RESPONSE
MAX15022 toc16
EN2 = 0V
VPVIN1
5V/div
0V
VOUT1
3.3V, AC-COUPLED
100mV/div
20µs/div
IOUT1
2A/div
0A
20µs/div
IOUT1
2A/div
0A
CHANNEL 2 LOAD STEP RESPONSE
MAX15022 toc17
EN1 = 0V
VPVIN2
5V/div
0V
VOUT2
1.5V, AC-COUPLED
100mV/div
IOUT2
1A/div
0A
CHANNEL 2 LOAD STEP RESPONSE
MAX15022 toc18
EN1 = 0V
VPVIN2
5V/div
0V
VOUT2
1.5V, AC-COUPLED
100mV/div
IOUT2
1A/div
0A
20µs/div
20µs/div
180° OUT-OF-PHASE OPERATION
MAX15022 toc19
IOUT1 = 3A
IOUT2 = 1.5A
PVIN1 = PVIN2
5V/div
0V
VLX1
5V/div
0V
VLX2
5V/div
0V
200ns/div
CHANNEL 3 AND CHANNEL 4 OUTPUT-
VOLTAGE DEVIATION vs. LOAD CURRENT
14
CHANNEL 3, VIN = 3.3V,
12 ^{VOUT3 = 2.5V}
NJT403OP PNP
10
8
6
4
CHANNEL 4, VIN = 2.5V,
2
VOUT4 = 1.5V
NJT403OP PNP
0
0 50 100 150 200 250 300 350 400 450 500
LOAD CURRENT (mA)
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