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PDF EMQ9904-00HC24NRR Data sheet ( Hoja de datos )
| Número de pieza | EMQ9904-00HC24NRR | |
| Descripción | 4 Channel Power Management IC | |
| Fabricantes | Elite Semiconductor | |
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ESMT/EMP
EMQ9904
4 Channel Power Management IC For
Portable Devices
GENERAL DESCRIPTION
The EMQ9904 is a high efficiency, 4-channel power
management IC for battery-powered, portable devices
application. It integrates a high efficiency step-up
DC/DC converter, a linear regulator and two high
efficiency step-down DC/DC converters.
The step-up DC/DC converter (CH1) can start up 0.9V
typically with operating voltage down to 0.6V and up to
500mA loading capability. It features with extreme low
26μA quiescent current with no load, which is the best fit
for extending battery life during the standby mode.
The linear regulator (CH2) features ultra-high power
supply rejection ratio (75dB at 1kHz), low output voltage
noise (30µV), low dropout voltage (270mV), low quiescent
current (110µA) and fast transient response. It operates from
2.5V to 5.5V input voltage, up to 600mA loading capability
and regulates adjustable output voltage from 1.2V to 5.0V.
The two Synchronous Buck converters (CH3, CH4)
operate from 2.5V to 5.5V input voltage, up to 600mA
loading capability and regulate adjustable output
voltage from 0.6V to 5.5V. It features low quiescent
current, 1.5MHz internal frequency operation.
The EMQ9904 is available in TQFN24 4x4 package,
It is Green compliant (RoHS and Halogen-free).
FEATURES
．Battery powered Synchronous boost Converter
＊ 1.8V to 5.5V Output Voltage
＊ Up to 93% Efficiency
＊ Output Current up to 500mA
＊ Typical Iq 26μA with No Load
＊ 1.1V to 5.5V operating Voltage
＊ 0.9V start-up input voltage
．Linear Regulator
＊ 1.2V to 5.0V Output Voltage
＊ 75dB Typical PSRR at 1kHz
＊ 30µV RMS Output Voltage Noise (10Hz to 100kHz)
＊ 270mV Typical Dropout at 600mA
．Two Synchronous Buck Converters
＊ 0.6V to 5.5V Output Voltage
＊ Up to 95% Efficiency
＊ Low Dropout Operation: 100% Duty Cycle
．No Schottky Diode Needed for Above Converters
．Shutdown Current < 1μA(CH1-CH4)
．Independent Enable PIN (CH1-CH4)
．Independent Input Voltage PIN(CH1-CH4)
．No External Compensation Network is needed
．Excellent Line and Load Transient Response (CH1-CH4)
．Over Current Protection(CH1-CH4)
．Over Temperature Protection(CH2, CH3, CH4)
APPLICATIONS
．Hand-held Instruments
．Battery-powered systems
．Portable information applications
．Wireless Networking
．Digital Still Cameras
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.0
1/29
1 page  
ESMT/EMP
EMQ9904
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage
(VIN2, VIN3, VIN4)
-0.3V to 6.0V
LX1 Switch PIN Voltage
OUT2 Voltage
-0.3V to 6.0V
-0.3V to 6.0V
LX3 Switch PIN Voltage
-0.3V to (VIN3+0.3V)
LX4 Switch PIN Voltage
-0.3V to (VIN3+0.3V)
Other I/O PIN Voltage
-0.3V to (VIN3+0.3V)
Storage Temperature
-65°C to +150°C
Power Dissipation
1.85W
ESD Susceptibility
Junction Temperature
Thermal Resistance
θJA (TQFN24 4x4)
Operating Ratings
Temperature Range
Supply Voltage
(VIN2, VIN3, VIN4)
TBD
150°C
45°C/W
-40°C ≦ TA ≦ 85°C
2.5V ≦ VDD ≦ 5.5V
ELECTRICAL CHARACTERISTICS
Apply for VIN1=2.0V, VOUT1=3.3V, FB1=VOUT, VIN2 = VOUT2 +1V (Note 6), VEN2 = VIN2, CIN2 = COUT2 = 2.2µF, CCC2 = 33nF, VIN3 =
3.6V, VIN4 = 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
EMQ9904
Min Typ Max
Units
CH1 (Note 4)
VIN1_MIN Minimum input voltage
0.7 V
VIN1 Operating Voltage
1.1 5.5 V
VSTART_UP Start-up Voltage (Note 5)
RL=3K
0.9 1.00
V
TVSTART_UP Start-up Voltage Temp-co.
-2 mV/oC
VIN<VOUT
1.8 5.5
VOUT1
Output Voltage
FB=VOUT
3.17 3.3 3.43
V
FB=GND
4.80 5.0 5.20
IOUT1
Steady State Output Current
(Note 6)
FB=VOUT
FB=GND
200 245
120 190
mA
VREF1
TVREF1
Reference Voltage
Reference Voltage Temp-co.
IREF=0
Temp=-40℃ to 85℃
1.16 1.195 1.225
V
0.015
mV/oC
ΔVREF1
Reference Load Regulation
Reference Line Regulation
IREF=0 to 100µA
VOUT1=1.8V to 5.5V
1 30 mV
0.3 5 mV/V
VFB1
RFET1
FB1 Input Threshold
Internal switch On-Resistance ILX1=100mA
1.16 1.195 1.225
0.4
V
Ω
ILX_LIM1
LX1 switch Current Limit
1A
ILX_LEAK1
IQ1
ISD_OUT1
LX1 Leakage Current
Operating Current into OUT1
(Note 7)
Shutdown Current into OUT1
VLX=0V~4V;Vout=5.5V
VFB=1.4V,Vout=3.3V
EN1=GND
0.05
26
0.1
1
40
1
µA
µA
µA
Effi1 Efficiency
Vout=3.3V, Iload=200mA
90
%
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.0
1/29
5 Page 
ESMT/EMP
CH1 Load Transient response
EMQ9904
CH1 Vref voltage vs temperature
Vref vs. Temperature
1.195
1.194
1.193
1.192
1.191
1.19
1.189
1.188
1.187
1.186
-60 -40 -20
0
20 40 60 80 100 120 140 160
Temperature (℃)
CH1 Switch Ron vs Temperature
Switch Resistance vs. Temperature when Vout=3.3V ILX=100mA
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
-60 -40 -20
0
20 40 60 80 100 120 140 160
Temperature (℃)
NMOS
PMOS
CH1 Line Transient Response
CH1 Shutdown current vs input voltage
Shutdown Current vs. Supply Voltage
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1 1.5 2 2.5 3 3.5 4 4.5 5
Supply Voltage (V)
5.5
CH2 PSRR vs. Frequency
Frequency (Hz)
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May 2009
Revision : 2.0
1/29
11 Page | ||
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