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參數(shù)資料
| 型號： | MAX888ECJ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Wireless and Satellite Handset Power-Management ICs |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, TQFP-32 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 257K |
| 代理商： | MAX888ECJ |
M
Wireless and S atellite Handset
Power-Management ICs
_______________________________________________________________________________________
9
Pin Desc ription (c ontinued)
PIN
FUNCTION
NAME
Linear Regulator 1 Output. Bypass with a 2.2μF, low-ESR capacitor to GND. Up to 100mA is available from
OUT1.
OUT1
24
Serial Interface Clock Input
SCL
29
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.
SYNC
30
High-Side Drive Bypass Input. Bypass CVH with a 0.1μF capacitor connected to IN0.
CVH
31
Regulator 0 Power-Supply Input. Connect to BATT. Source of the internal p-channel MOSFET.
IN0
32
SCL
A
B
C
D
E
F
G
H
I
J
K
SDA
t
SU:STA
t
HD:STA
t
LOW
t
HIGH
t
SU:DAT
t
HD:DAT
t
SU:STO
t
BUF
A = START CONDITION
B = MSB OF ADDRESS CLOCKED INTOSLAVE
C = LSB OF ADDRESS CLOCKED INTOSLAVE
D = R/W BIT CLOCKED INTOSLAVE
E = SLAVE PULLS SMBDATA LINE LOW
L
M
F = ACKNOWLEDGE BIT CLOCKED INTOMASTER
G = MSB OF DATA CLOCKED INTOSLAVE (OP/SUS BIT)
H = LSB OF DATA CLOCKED INTOSLAVE
I = SLAVE PULLS SMBDATA LINE LOW
J = ACKNOWLEDGE CLOCKED INTOMASTER
K = ACKNOWLEDGE CLOCK PULSE
L = STOP CONDITION, DATA EXECUTED BY SLAVE
M = NEW START CONDITION
Figure 1. I
2
C-Compatible Serial-Interface Timing Diagram
Power-On Input. Pulse the
ON
pin low to turn on the IC.
ON
has an internal 16μA pull-up.
ON
26
Serial Interface Data Input
SDA
28
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.
ONSTAT
27
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 100k
pull-down resistor to GND.
OFF
25
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