Pmics with dynamic core for pdas and smart phones, Typical operating characteristics (continued) – Rainbow Electronics MAX1587A User Manual
Page 12
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
12
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 5, V
IN
= 3.6V, T
A
= +25°C, unless otherwise noted.)
PWR_EN STARTUP WAVEFORMS
MAX1586A/86B/87A toc19
1ms/div
2V/div
2V/div
2V/div
2V/div
2V/div
V5
V4
V3
V
EN3
AND
V
EN45
V
POK
REG1 LOAD-TRANSIENT RESPONSE
MAX1586A/86B/87A toc20
200µs/div
0A
V1
100mV/div
AC-COUPLED
I
LOAD1
200mA/div
REG2 LOAD-TRANSIENT RESPONSE
MAX1586A/86B/87A toc21
200µs/div
0A
V2
100mV/div
AC-COUPLED
I
LOAD2
200mA/div
REG3 FORCED-PWM SWITCHING
WAVEFORMS WITH 10mA LOAD
MAX1586A/86B/87A toc16
400ns/div
0mA
0V
500mA/div
10mv/div
AC-COUPLED
2V/div
V
LX3
V3
I
L3
V7 AND RSO
STARTUP WAVEFORMS
MAX1586A/86B/87A toc17
10ms/div
0V
2V/div
0V
2V/div
0V
2V/div
RSO
V
IN
V7
SYS_EN STARTUP WAVEFORMS
MAX1586A/86B/87A toc18
2ms/div
2V/div
2V/div
2V/div
2V/div
V2
V1
V
EN1
AND
V
EN2
V
POK