SC905 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC905 Datasheet PDF : 21 Pages
| |||
SC905
POWER MANAGEMENT
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
T
Pin Name
IN2
VCORE
IN1
VPAD
ON
HFPWR
SDA
SCL
DGND
DVIN
CHRGB
CPB
FAULTB
VPSEL
VCSEL
PWRON
RESB
PGOOD
BP
VBAT
AGND
VPLL
IN6
VTX
VTCXO
IN5
VRX
VANA
IN4
VCAM
IN3
VMOT
Thermal
Pad
I/O
Pin Function
Input
Output
Input
Output
Input
Input voltage terminal to VCORE LDO.
300mA LDO output for MSM core processor supply.
Input voltage terminal to VPAD LDO.
300mA LDO PAD output to MSM I/O circuits.
Active high power on/off key. When the push button is closed it is shorted to battery.
Input
Input/Output
Input
-
Power on input from accessory, active high.
Bi-directional open drain digital I/O. I2C serial data.
Digital input. I2C serial clock.
Digital ground.
Input
Main digital input voltage terminal.
Input
Input
Input
Input
Input
Output
Output
Input
Logic input. State is recorded in bit 1 of the status register.
Logic input. State is recorded in bit 0 of the status register.
Logic input. State is recorded in bit 2 of the status register.
Default control for VPAD LDO supply. Ground for 1.80V default, tie high for 2.60V.
Default control for VCORE LDO supply. Ground for 1.35V default, tie high for 1.80V.
Logic OR output of ON, HFPWR and PGOOD. Active high.
Reset output. Active low.
Logic input signal from MSM to indicate power is good, latches the SC905 on.
Low disables the SC905.
Output
Input
-
Output
Input
Output
Output
Input
Output
Output
Input
Output
Input
Output
LDO bypass output. Bypass with a 0.1μF capacitor.
Main battery supply input terminal.
Analog ground pin.
LDO output for PLL power.
Input voltage terminal for VPLL & VTX LDOs.
LDO output for transmitter power.
LDO output for TCXO power.
Input voltage terminal for VTCXO & VRX LDOs.
LDO output for receiver power.
LDO output for analog power.
Input voltage terminal to VANA LDO.
LDO output for camera power.
Input voltage terminal to VCAM & VMOT LDOs.
LDO output voltage for vibrator motor power. Can also be a general purpose output.
-
Pad for heatsinking purposes. Connect to ground plane using multiple vias.
Not connected internally.
© 2006 Semtech Corp.
8
www.semtech.com
Share Link: 