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Management IC. SC905 Datasheet

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Management IC. SC905 Datasheet






SC905 IC. Datasheet pdf. Equivalent




SC905 IC. Datasheet pdf. Equivalent





Part

SC905

Description

CDMA Cellular Phone Power Management IC



Feature


CDMA Cellular Phone www.DataSheet4U.com IC Power Management POWER MANAGEMENT De scription The SC905 is a power manageme nt integrated circuit (PMIC) designed f or the latest CDMA chip sets. The devic e provides four general purpose low dro pout regulators (LDOs), and five low n oise LDOs designed for analog circuits. The VMOT LDO can be used as a general purpose regulator or.
Manufacture

Semtech

Datasheet
Download SC905 Datasheet


Semtech SC905

SC905; as an adjustable motor drive output tha t can supply up to 150mA to drive a vib rator motor. Each LDOs enable and outpu t voltage are controlled via the I2C bu s. An optional three-wire interface com patible with Semtech battery charger IC s is also controlled via the I2C bus. I nitial power-on is achieved by activati ng either the ON or the HFPWR signal, a nd the PGOOD input.


Semtech SC905

is used by the microprocessor to latch power on or disable the device. The sma ll and thermally efficient MLPQ-32 pac kage and use of ceramic bypass capacito rs, minimize the required PCB area maki ng the SC905 ideal for space-conscious portable applications. SC905 Features 9 LDO Linear Regulators CORE: 1.35V - 2.90V @ 300mA ANA: 2.55V - 2.90V @ 200m A PAD: 1.35V - 2.90V.


Semtech SC905

@ 300mA RX: 2.55V - 2.90V @ 150mA TX: 2 .55V - 2.90V @ 150mA TCXO: 2.55V - 2.90 V @ 80mA PLL: 2.55V - 2.90V @ 80mA Came ra: 1.35V - 2.90V @ 100mA Motor Drive: 1.35V - 2.90V @ 150mA I2C Interface for Microprocessor Control Less than 1μA Quiescent Current in Shutdown 65dB PSRR for Analog LDOs Over-Temperature Prote ction Power-On Control Optional Interfa ce for Controlling .

Part

SC905

Description

CDMA Cellular Phone Power Management IC



Feature


CDMA Cellular Phone www.DataSheet4U.com IC Power Management POWER MANAGEMENT De scription The SC905 is a power manageme nt integrated circuit (PMIC) designed f or the latest CDMA chip sets. The devic e provides four general purpose low dro pout regulators (LDOs), and five low n oise LDOs designed for analog circuits. The VMOT LDO can be used as a general purpose regulator or.
Manufacture

Semtech

Datasheet
Download SC905 Datasheet




 SC905
POWER MANAGEMENT
Description
The SC905 is a power management integrated circuit
(PMIC) designed for the latest CDMA chip sets. The device
provides four general purpose low dropout regulators
(LDOs), and ve low noise LDOs designed for analog cir-
cuits. The VMOT LDO can be used as a general purpose
regulator or as an adjustable motor drive output that can
supply up to 150mA to drive a vibrator motor.
Each LDOs enable and output voltage are controlled via
the I2C bus. An optional three-wire interface compatible
with Semtech battery charger ICs is also controlled via the
I2C bus.
Initial power-on is achieved by activating either the ON or
the HFPWR signal, and the PGOOD input is used by the
microprocessor to latch power on or disable the device.
The small and thermally efcient MLPQ-32 package and
use of ceramic bypass capacitors, minimize the required
PCB area making the SC905 ideal for space-conscious
portable applications.
Typical Application Circuit
SC905
CDMA Cellular Phone
Power Managementwww.DataSheet4U.com IC
Features
9 LDO Linear Regulators
CORE: 1.35V - 2.90V @ 300mA
ANA: 2.55V - 2.90V @ 200mA
PAD: 1.35V - 2.90V @ 300mA
RX: 2.55V - 2.90V @ 150mA
TX: 2.55V - 2.90V @ 150mA
TCXO: 2.55V - 2.90V @ 80mA
PLL: 2.55V - 2.90V @ 80mA
Camera: 1.35V - 2.90V @ 100mA
Motor Drive: 1.35V - 2.90V @ 150mA
I2C Interface for Microprocessor Control
Less than 1μA Quiescent Current in Shutdown
65dB PSRR for Analog LDOs
Over-Temperature Protection
Power-On Control
Optional Interface for Controlling Semtech
Battery Chargers
Small 5mm x 5mm 32-Pin QFN Package
Applications
CDMA Cellular Handsets
Palmtop/Laptop Computers
Battery Powered Equipment
Battery
Charger
Circuit
ON/OFF
Handsfree
Option
MOTOR
SC905
CPB
CHRGB
FAULTB
VBAT
IN1
IN2
IN3
IN4
IN5
ON
HFPWR
PGOOD
SDA
SCL
PWRON
RESB
IN6
DVIN
VCORE
VPAD
VANA
VTCXO
VPLL
VTX
0.1μF
VMOT
BP
AGND
VRX
VCAM
VPSEL
VCSEL
DGND
VBAT
10μF
BATTERY
1μF
1μF
1μF 1μF
1μF
1μF
Baseband
Processor
1μF
1μF
Keypad
Audio
Processing
TCXO
+
Synthesiser
PLL
Transmitter
Section
PA
Receiver
Section
LNA
Camera
Module
Digital
Interface
June 7, 2006
1 www.semtech.com




 SC905
SC905
POWER MANAGEMENT
www.DataSheet4U.com
Absolute Maximum Ratings
Exceeding the specications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specied in the
Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
Input Supply Voltage
VIN -0.3 to +7 V
Digital Input Voltage
VDIG -0.3 to VIN+0.3
V
Operating Ambient Temperature Range
TA
-40 to +85
°C
Operating Junction Temperature Range
TJ
-40 to +125
°C
Peak IR Reow Temperature
TLEAD
260
°C
Storage Temperature
TSTG
-60 to +150
°C
Thermal Resistance Junction to Ambient(1)
θJA
26 °C/W
ESD Protection Level(2)
ESD
2
kV
(1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards.
(2) Tested according to JEDEC standard JESD22-A114-B.
Electrical Characteristics
Unless otherwise noted VIN = 3.7V, TA = -40 to +85°C. Typical values are at TA = +25°C.
Parameter
Symbol
Condition
Min Typ Max
Units
General
Supply Voltage
Shutdown Current
Quiescent Supply Current
Supply Bypass Capacitor
Start-Up Time
Under-Voltage Lockout
Over-Temperature
VIN
ISD
ISU
ISTBY
CVCC
tSU
UVLO
OT
ON = 0V, HFPWR = 0V, PGOOD = 0V
Default Start-up Mode
I2C, VREF Active, All Outputs Disabled
At Each Power Input Pin
CBP = 0.1μF
Descending, Hysteresis = 50mV
Hysteresis = 20°C
2.7
300
30
1
25
2.5
160
5.5
1
60
V
μA
μA
μA
μF
ms
V
°C
Digital Inputs
Digital Input Voltage(1)
Digital Input Current
Digital Outputs
Digital Output Voltage(2)
LDO Regulator (CORE) - 300mA
VIL
VIH
IDIG
VOL
VOH
Logic Level High or Low
ISINK = 1.2mA
ISOURCE = 0.5mA, VPAD 1.8V
0.4 V
1.25 V
-0.2 0.2 μA
2 10 %VPAD
90 98
%VPAD
Output Voltage Accuracy(3)
Current Limit
Default At Start-Up: ON
© 2006 Semtech Corp.
VOUT
ILIM
VOUT-HI
VOUT-LO
1.35V VOUT 2.90V, IOUT = 1mA,
VOUT +0.35V VIN 5.5V
VCORE = 0V
VCSEL - High
VCSEL - Low
2
-75 +75 mV
350 900
1.80
1.35
mA
V
V
www.semtech.com




 SC905
SC905
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Symbol
LDO Regulator (CORE) - 300mA (Cont.)
Line Regulation
REGLINE
Load Regulation
Dropout Voltage
REGLOAD
VDO
Power Supply Rejection Ratio PSRRCORE
LDO Regulator (PAD) - 300mA
Output Voltage Accuracy(3)
VOUT
Current Limit
Default at Start-up: ON
Line Regulation
Load Regulation
Dropout Voltage
Power Supply Rejection Ratio
LDO Regulator (ANA) - 200mA
ILIM
VOUT-HI
VOUT-LO
REGLINE
REGLOAD
VDO
PSRRPAD
Output Voltage Accuracy(4)
VOUT
Current Limit
Default At Start-up: ON
Line Regulation
Load Regulation
Dropout Voltage
Power Supply Rejection Ratio
ILIM
VOUT
REGLINE
REGLOAD
VDO
PSRRANA
Output Voltage Noise
en
LDO Regulator (TCXO) - 80mA
Output Voltage Accuracy(4)
VOUT
Current Limit
Default At Start-up: ON
Line Regulation
Load Regulation
Dropout Voltage
Power Supply Rejection Ratio
ILIM
VOUT
REGLINE
REGLOAD
VDO
PSRRTCXO
Condition
IOUT = 1mA, VOUT +0.35V < VIN < 5.5V
1mA < IOUT < 300mA
VOUT = 2.90V, IOUT = 300mA
f = 10Hz - 1kHz, COUT = 1μF, IOUT = 50mA
1.35V VOUT 2.90V, IOUT =1mA,
VOUT +0.35V VIN 5.5V
VPAD = 0V
VPSEL - High
VPSEL - Low
IOUT = 1mA, VOUT +0.35V < VIN < 5.5V
1mA < IOUT < 300mA
VOUT = 2.90V, IOUT = 300mA
f = 10Hz - 1kHz, COUT = 1μF, IOUT = 50mA
2.55V VOUT 2.90V, IOUT = 1mA,
VOUT +0.35V VIN 5.5V
VANA = 0V
IOUT = 1mA, VOUT +0.35V < VIN < 5.5V
1mA < IOUT < 200mA
VOUT = 2.90V, IOUT = 200mA
f = 10Hz - 1kHz, COUT = 1μF, IOUT = 50mA
f = 10Hz to 100kHz, IOUT = 50mA,
CBP = 0.1μF, COUT = 1μF
2.55V VOUT 2.90V, IOUT = 1mA,
VOUT +0.35V VIN 5.5V
VTCXO = 0V
IOUT = 1mA, VOUT +0.35V < VIN < 5.5V
1mA < IOUT < 80mA
VOUT = 2.90V, IOUT = 80mA
f = 10Hz - 1kHz, COUT = 1μF, IOUT = 50mA
Min
-75
350
-75
250
-75
250
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Typ Max
Units
2.5 12
-3 -30
300 350
50
mV
mV
mV
dB
+75
900
2.60
1.80
2.5 12
-3 -30
300 350
50
mV
mA
V
V
mV
mV
mV
dB
+75
650
2.60
2.5 12
-3 -20
200 250
65
45
mV
mA
V
mV
mV
mV
dB
μVRMS
+75
650
2.85
2.5 12
-3 -20
200 250
65
mV
mA
V
mV
mV
mV
dB
© 2006 Semtech Corp.
3
www.semtech.com






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