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Elite Semiconductor

EMQ9920 Datasheet Preview

EMQ9920 Datasheet

2 Channel Power Management IC

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ESMT/EMP
EMQ9920
2 Channel Power Management IC For
Portable Devices
GENERAL DESCRIPTION
The EMQ9920 is a high efficiency, 2-channel power
management IC for battery-powered, portable
devices application. It integrates two high efficiency
step-down DC/DC converters.
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 EMQ9920 is available in TQFN16 3x3 package.
It is Green compliant (RoHS and Halogen-free).
FEATURES
Two Synchronous Buck Converters
Achieve 95% efficiency
Input Voltage : 2.5V to 5.5V
Output Current up to 600mA
Reference voltage 0.6V
Quiescent Current 200μA with No Load
Internal switching frequency 1.5MHz
No Schottky Diode needed
Low Dropout Operation: 100% Duty Cycle
Shutdown current < 1μA
Excellent Line and Load Transient Response
Over-temperature Protection
APPLICATIONS
Blue-Tooth devices
Cellular and Smart Phones
Personal multi-media Player (PMP)
Wireless networking
Digital Still Cameras
Portable applications
Figure 1. Typical Application
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2009
Revision : 2.0
1/18




Elite Semiconductor

EMQ9920 Datasheet Preview

EMQ9920 Datasheet

2 Channel Power Management IC

No Preview Available !

ESMT/EMP
CONNECTION DIAGRAM
TQFN16 3x3
EMQ9920
ORDER INFORMATION
EMQ9920-00HB16NRR
00
HB16
N
R
R
Adjustable output voltage
TQFN16 Package
Green(RoHS and Halogen-free)
Commercial Grade Temperature
Rating: -40 to 85°C
Package in Tape & Reel
MARKING & PACKING INFORMATION
Package
Product ID
Marking
TQFN16
EMQ9920-00HB16NRR
Packing
5K units Tape & Reel
TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
NC 1, 3, 10, 12
LX1 2
EN1 4
GND
FB1
5, 8, 13, 16
6
I/O DESCRIPTION
N/A Non-connection.
O CH1 Switch PIN.
Must be connected to Inductor. This pin connects to the drains of the
internal main and synchronous power MOSFET switches.
I CH1 Enable Input.
Minimum 1.3V to enable the device. Maximum 0.5V to shut down the
device. Do not leave this pin floating and enable the chip after VIN1 is
in the input voltage range.
I Ground PIN.
I CH1 Voltage Feedback PIN.
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2009
Revision : 2.0
2/18


Part Number EMQ9920
Description 2 Channel Power Management IC
Maker Elite Semiconductor
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