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BL8083 Datasheet(PDF) 1 Page - SHANGHAI BELLING CO., LTD.

Part No. BL8083
Description  PMU with a Synchronous 18V 2A Buck and a CMOS 6V 1.5A LDO
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Maker  BELLING [SHANGHAI BELLING CO., LTD.]
Homepage  http://www.belling.com.cn
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BL8083 Datasheet(HTML) 1 Page - SHANGHAI BELLING CO., LTD.

   
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PMU with a Synchronous 18V 2A Buck and a CMOS 6V 1.5A LDO
BL8083
DESCRIPTION
The BL8083 is a power management unit (PMU),
with 1 synchronous 18V Buck and 1 CMOS 6V low-
dropout regulator that delivers a maximum
current of 2A for Buck’s output and a maximum
current of 1.5A for LDO’s output.
The synchronous buck is a high-efficiency, DC-to-DC
step-down
switching
regulator,
capable
of
delivering up to 2A of output current. It is a fully
integrated, high-efficiency synchronous rectified
step-down converter. It operates at high efficiency
over a wide output current load range. It offers
PWM switching control, which allows a high
efficiency over the wider range of the load.
The LDO is a low-dropout regulator that delivers a
maximum current of 1.5A output. Typical dropout
voltage at 1A load current is 0.3V. It has excellent
load and line transient response and good
temperature characteristics, which can assure the
stability of chip and power system. The output
accuracy is set within 2% by trimming.
Typical LDO output voltage: VOUT=3.3V. Other fixed
voltage can be provided in the range of 1.2V~5V
every 0.1V step. It also can be customized on
command. LDO can also work under a wide input
voltage ranging from 2V to 6V. They can provide
foldback short-circuit protection and output
current limit function.
BL8083 is available in lead (Pb)-free DFN2X3-8 (with
exposed pad for heat dissipation) package.
PIN OUT & MARKING
DFN2x3-8
FEATURES
BUCK
 High Efficiency : Up to 96%
 Capable of Delivering 2A
 500KHz Frequency Operation
 No External Schottky Diode Needed
 4.2V to 18V Input Voltage Range
 0.8V Reference
 Logic Control Shutdown (IQ<1uA)
 Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
 Integrated internal compensation
 Stable with Low ESR Ceramic Output Capacitors
 Over Current Protection with Hiccup-Mode
 Thermal Shutdown
 Inrush Current Limit and Soft Start
LDO
 Max output current is 1.5A
 Input voltage range: 2 – 6V
 Output voltage range: 1.2V~5V (customized
on command every 0.1V step)
 Low Quiescent Current: 100uA at 5V
 High PSRR: 70dB range to 1KHz
 Low Output Noise: 44uVRMS
 Low Dropout: 300mV at 1A load
 Low ESR Ceramic Capacitor Compatible
 Low temperature coefficient: ±100ppm/C
 Excellent line regulation: 0.05%/V
 Highly accurate: ±2%
 Output current limit
APPLICATIONS
 Distributed Power Systems
 Digital Set Top Boxes
 Flat Panel Television and Monitors
 Wireless and DSL Modems
 Power source for cellular phones and various
kind of PCSs
 Battery Powered equipment
FB
VDD
BS
LGND
2
1
4
3
7
8
5
6
SW
VOUT
VI
EN
9
GND
GS: Product Code
YW: Date code (Year & Week)
LLLL: Lot No.
XX: Output Voltage
e.g. 33=3.3V


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