MAX888ECJ Maxim, MAX888ECJ Datasheet - Page 9

• Manufacturer Part Number: MAX888ECJ
• Description: Wireless and Satellite Handset Power-Management ICs
• Manufacturer: Maxim

Figure 1. I
SCL
SDA
PIN
24
25
26
27
28
29
30
31
32
A = START CONDITION
B = MSB OF ADDRESS CLOCKED INTO SLAVE
C = LSB OF ADDRESS CLOCKED INTO SLAVE
D = R/W BIT CLOCKED INTO SLAVE
E = SLAVE PULLS SMBDATA LINE LOW
t
2
SU:STA
ONSTAT
C-Compatible Serial-Interface Timing Diagram
NAME
SYNC
OUT1
SDA
CVH
OFF
SCL
IN0
ON
A
t
HD:STA
_______________________________________________________________________________________
t
LOW
Linear Regulator 1 Output. Bypass with a 2.2µF, low-ESR capacitor to GND. Up to 100mA is available from
OUT1.
Power-Off Input. Drive OFF high before the start-up timer has expired in order to keep the IC powered on.
Drive OFF low to shut down the IC. OFF has an internal 100kΩ pull-down resistor to GND.
Power-On Input. Pulse the ON pin low to turn on the IC. ON has an internal 16µA pull-up.
ON Status Output. Push/pull logic output indicating the state of the ON input. The logic state of this pin
follows the logic state of the ON pin. The logic high output voltage is the output voltage of OUT2.
Serial Interface Data Input
Serial Interface Clock Input
Sync Input. Drive SYNC with a logic-level square wave to synchronize the internal oscillator. The capture
range for external clock is ±20% of the selected internal oscillator frequency. Drive SYNC low for more
than 10µs to force low-power PFM mode (standby mode). Drive SYNC high to force PWM mode.
High-Side Drive Bypass Input. Bypass CVH with a 0.1µF capacitor connected to IN0.
Regulator 0 Power-Supply Input. Connect to BATT. Source of the internal p-channel MOSFET.
B
t
HIGH
t
SU:DAT
C
F = ACKNOWLEDGE BIT CLOCKED INTO MASTER
G = MSB OF DATA CLOCKED INTO SLAVE (OP/SUS BIT)
H = LSB OF DATA CLOCKED INTO SLAVE
I = SLAVE PULLS SMBDATA LINE LOW
Wireless and Satellite Handset
D
E
F
Power-Management ICs
t
HD:DAT
FUNCTION
G
Pin Description (continued)
H
J = ACKNOWLEDGE CLOCKED INTO MASTER
K = ACKNOWLEDGE CLOCK PULSE
L = STOP CONDITION, DATA EXECUTED BY SLAVE
M = NEW START CONDITION
I
J
K
t
SU:STO
L
t
BUF
M
9