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PDF EMQ8931-00QE20GRR Data sheet ( Hoja de datos )
| Número de pieza | EMQ8931-00QE20GRR | |
| Descripción | 3-Channel Power Management IC | |
| Fabricantes | Elite MicroPower | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EMQ8931-00QE20GRR (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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Elite MicroPower Inc.
Preliminary
EMQ8931
3-Channel Power Management IC For
Portable Devices
GENERAL DESCRIPTION
The EMQ8931 is a high efficiency, 3-channel power
accuracy
＊ Automatic recharge
management IC for portable devices application. It
＊ Charge status indicator
integrates a complete linear charger for single cell
＊ C/10 charge termination
lithium-ion battery, a linear regulator and a high
＊ Battery reverse leakage current less than 1µA
efficiency step-down DC/DC converter.
＊ 45µA shutdown supply current
The linear charger (CH1) operates from 4.25V to 5.5V
input voltage and up to 1A charging capability. It is
＊ Soft-start limits inrush current
．Linear Regulator
thermal regulated and specifically designed to work
＊ 1.2V to 5.0V Output Voltage
within USB power specifications.
＊ 75dB Typical PSRR at 1kHz
The linear regulator (CH2) features ultra-high power
＊ 30µV RMS Output Voltage Noise (10Hz to
supply rejection ratio (75dB at 1kHz), low output voltage
100kHz)
noise (30µV), low dropout voltage (180mV), low
quiescent current (110µA) and fast transient response. It
＊ 180mV Typical Dropout at 300mA
．Synchronous Buck Converter
operates from 2.5V to 5.5V input voltage, up to 300mA
loading capability and regulates adjustable output
＊ 0.6V to VIN Output Voltage
＊ Up to 95% Efficiency
voltage from 1.2V to 5.0V.
＊ Low Dropout Operation: 100% Duty Cycle
The Synchronous Buck converter (CH3) operates
＊ No Schottky Diode Needed
from 2.5V to 5.5V input voltage, up to 600mA
loading capability and regulate adjustable output
voltage from 0.6V to VIN. It features low quiescent
current, 1.5MHz internal frequency operation.
The EMQ8931 is available in TSSOP-20FD package,
．Shutdown Current < 1µA (CH1-CH3)
．Independent Enable PIN(CH1-CH3)
．Independent Input Voltage PIN(CH1-CH3)
．No External Compensation Network is needed
．Excellent Line and Load Transient
It is RoHS (Pb-free).
FEATURES
．Linear Charger
＊ 4.25V to 5.5V Input Voltage
＊ Programmable charge current up to 1A
＊ Thermal regulation maximizes charge rate
without risk of overheating
＊ Act as a LDO when battery is removed
＊ Preset 4.2V charge voltage with ±1%
Response(CH1-CH3)
．Over Current Protection
．Over Temperature Protection
APPLICATIONS
．Hand-held Instruments
．Portable information applications
．Wireless Networking
．GPS
．MP3/MP4/PMP Multi-media
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders.
DSQ8931V1.0 August 1st 2008
Page 1 of 24
www.elitemicropower.com
1 page  
Elite MicroPower Inc.
Preliminary
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage
-0.3V to 6.0V
(VIN, VIN2, VIN3)
BAT PIN Voltage
-0.3V to 6.0V
MCHRG PIN Voltage
-0.3V to 6.0V
PROG PIN Voltage
-0.3V to 6.0V
SW3 Switch PIN Voltage -0.3V to (VIN3+0.3V)
Other I/O PIN Voltage
-0.3V to (VIN+0.3V)
Storage Temperature
-65°C to +150°C
Power Dissipation
2.2W
ESD Susceptibility
Junction Temperature
Thermal Resistance
θJA (TSSOP-20FD )
Operating Ratings
Temperature Range
VIN Supply Voltage
Supply Voltage
(VIN2, VIN3)
EMQ8931
TBD
150°C
55°C/W
-40°C ≦ TA ≦ 85°C
4.25V ≦ VDD ≦ 5.5V
2.5V ≦ VDD ≦ 5.5V
ELECTRICAL CHARACTERISTICS
Apply for VIN=5.0V, VIN2 = VOUT2 +1V (Note 6), VSHDN2 = VIN2, CIN2 = COUT2 = 2.2µF, CCC2 = 33nF, VIN3 = 3.6V and TA =
25°C (unless otherwise noted), Boldface limits apply for the operating temperature extremes: -40°C and 85°C.
Symbol
Parameter
Conditions
EMQ8931
Min Typ Max
Units
CH1
VIN Input voltage
ICC Input Supply Current
VFLOAT
Regulated Output (Float)
Voltage
4.25
5.5
Charge Mode, RPROG=10K
(Note 4)
Standby Mode
(Charge Terminated)
Shutdown Mode
(RPROG Not Connected,
VIN<VBAT or VIN <VUV)
260
106
45
0°C ≦ TA ≦ 85°C
4.158 4.2 4.242
RPROG=2K, Current Mode
480
V
µA
V
mA
IBAT BAT Pin Current
Standby Mode, VBAT=4.2V
-1
0
1
Shutdown Mode
(RPROG Not Connected)
-1 0 1 μA
Sleep Mode, VIN=0V
-1 0 1
ITRICKLE Trickle Charge Current
VBAT<VTRICKLE, RPROG=2K
50 mA
VTRICKLE
VTRHYS
VUV
VUVHYS
Trickle Charge Threshold
Voltage
Trickle Charge Hysteresis
Voltage
VIN Under voltage Lockout
Threshold
VIN Under voltage Lockout
Hysteresis
RPROG=10K, VBAT Rising
RPROG=10K
From VIN Low to High
2.9 V
210 mV
3.0 V
180 mV
VASD VIN-VBAT Lockout Threshold
VIN from Low to High
80 mV
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders.
DSQ8931V1.0 August 1st 2008
Page 5 of 24
www.elitemicropower.com
5 Page 
Elite MicroPower Inc.
Preliminary
EMQ8931
CH1 Trickle Charge Current vs Supply Voltage
CH1 Trickle Charge Threshold vs Temperature
VBAT=2.5V
RPROG=2k
RPROG=10k
VIN (V)
Temperature (oC)
CH1 Recharge Voltage Threshold vs Temperature
CH1 Regulated Output (Float) Voltage vs Charge Current
RPROG=1.25k
RPROG=10k
Temperature (oC)
CH2 PSRR vs. Frequency
IBAT (mA)
CH2 PSRR vs. Frequency
Frequency (Hz)
Frequency (Hz)
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders.
DSQ8931V1.0 August 1st 2008
Page 11 of 24
www.elitemicropower.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet EMQ8931-00QE20GRR.PDF ] | |
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