Rainbow Electronics MAX1587A - Manual (Page 17)

MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
______________________________________________________________________________________ 17
MAIN
BATT
PV1
BATT
STEP-DOWN
PWM
REG1
SLEEP
LDO
LX1
PG1
V1
FB1
V2
FB2
PV2
ON
SLPIN IN
ON
STEP-DOWN
PWM
REG2
SLEEP
LDO
LX2
PG2
FB3
ON3
IN45
V4
BYP
ON4
ON5
V6
ON6
IN6
V5
PV3 TO BATT
TO V2
TO V2
TO BATT
PWM
LDO
REG
4
LDO
REG
5
STEP-DOWN
PWM
REG3
LX3
PG3
LDO
REG
6
V2, VCC_MEM
2.5V WITH FB2 = GND,
1.8V WITH FB2 = IN (MAX1586A, MAX1587A)
3.3V WITH FB2 = IN (MAX1586B)
OR ADJ WITH RESISTORS
V1, VCC_IO
3.3V WITH FB1 = GND,
3.0V WITH FB1 = IN,
OR ADJ WITH RESISTORS
VCC_USIM
0V, 1.8V, 3.0V (DEF = 0V)
V4, VCC_PLL
1.3V, 35mA
V5, VCC_SRAM
1.1V, 35mA
V3, VCC_CORE
0.75V TO 1.3V
(DEF = 1.3V)
FROM CPU
PWR_EN
FROM CPU
SYS_EN
ON1
RUN
SLEEP
ON2
DBI (3.15V OR ADJ)
LBO
REF
1.25V
REF
UVLO
AND
BATT
MON
LBI (3.6V OR ADJ)
BKBT
DBO
SLP
TO V1
REG1 OK
POK
SCL SDA
GND
I 2 C
SERIAL
CC1
V7, VCC_BATT
(1ST SUPPLY, ALWAYS ON)
FROM CPU
SYS_EN
V7
V1–V6
POWER-
OK
CC2
CC3
TO CPU
nRESET
TO CPU
nVCC_FAULT
RSO
MR
RESET INPUT
Li+
BACKUP
BATTERY
OPEN-DRAIN LOW-BATT OUT
OPEN-DRAIN DEAD-BATT OUT
TO nBATT_FAULT
V3
DAC
RAMP
SRAD
PWM3 FORCE REG3
TO PWM
V7
RESET
2.425V
65ms
ADJ ON
MAX1586
100kΩ
Figure 1. MAX1586 Functional Diagram. The MAX1587 omits some features. See the Pin Description section.