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uP1715 Schematic ( PDF Datasheet ) - uPI Semiconductor

Teilenummer uP1715
Beschreibung 340K High-Efficiency Synchronous-Rectified Buck Converter
Hersteller uPI Semiconductor
Logo uPI Semiconductor Logo 




Gesamt 10 Seiten
uP1715 Datasheet, Funktion
Conceptual
uP1715
2A, 23V, 340K High-Efficiency
Synchronous-Rectified Buck Converter
General Description
Features
The uP1715 is a high-efficiency synchronous-rectified † 4.5V to 23V Input Voltage Range
buck converter with internal power switch. With internal † Adjustable Output from 0.925V to 20V
low RDS(ON) switches, the high-efficiency buck converter
is capable of delivering 2A output current over a wide input
†
2A Output Current
voltage range from 4.5V to 23V. The output voltage is † Accurate Reference: 0.925V ( + 1.5%)
adjustable from 0.925V to 20V by a voltage divider. Other † Up to 93% Conversion Efficiency
features for the buck converter include adjust soft-start,
chip enable, over-voltage, under-voltage, over- † Integrated Low RDS(ON) Upper and Lower MOSFET
temperature and over-current protections. It is available
Switches: 130mΩ
in a space saving SOP-8L package.
† Current Mode PWM Operation
Applications
†
†
Constant 340kHz Fixed-Frequency Operation
Programmable Soft-Start
† Battery-Powered Portable Devices
† Integrated Boot Diode
„ MP3 Players
† Over Voltage and Under Voltage Protection
„ Digital Still Cameras
† Over Temperature and Over Current Protection
„ Wireless and DSL Modems
† SOP-8L Package
„ Personal Information Appliances
† RoHS Compliant and Halogen Free
† 802.11 WLAN Power Supplies
† FPGA/ASIC Power Supplies
Pin Configuration
† Laptop, Palmtops, Notebook Computers
† Portable Information Appliances
Ordering Information
BOOT
VIN
LX
1
2
3
8 SS
7 EN
6 COMP
Order Number Package Type
Remark
GND
4
5 FB
uP1715PSA8
SOP-8L
SOP - 8L
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirement. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. C03, File Name: uP1715-DS-C0300
1






uP1715 Datasheet, Funktion
Conceptual
Parameter
Symbol
Test Conditions
Power Switches
Hide-Side Switch On
Resistance
Low-Side Switch On Resistance
High-Side Switch Leakage
Current
Upper Switch Current Limit
Lower Switch Current Limit
RDS(ON)
RDS(ON)
VEN = 0V, VSW = 0V
Minimum Duty Cycle
From Drain to Source
Oscillator
Oscillation Frequency
FOSC1
Short Circuit Oscillation
Frequency
Maximum Duty Cycle
Minimum On Time
Logic Input
FOSC2 VFB = 0V
DMAX VFB = 1.0V
TON
EN Shutdown Threshold Voltage
EN Shutdown Voltage Hysteresis
EN Lockout Threshold Voltage
EN Lockout Voltage Hysteresis
Soft Start
VEN Rising
Soft-Start Current
Soft-Start period
Protection
VSS = 0V
CSS = 0.1uF
FB Over Voltage Protection
Over-Temperature Protection
Over-Temperature Hysteresis
uP1715
Electrical Characteristics
Min Typ Max Units
-- 130 -- mΩ
-- 130 -- mΩ
-- 0 10 uA
2.4 3.4
-- 1.1
--
--
A
A
300 340 380 kHz
-- 110 -- kHz
-- 90 --
-- 220 --
%
ns
2.0 2.2 2.4 V
-- 250 -- mV
2.5 2.7 2.9 V
-- 450 -- mV
5.5 6.0 6.5 uA
-- 15 -- ms
-- 1.1 --
-- 160 --
-- 30 --
V
OC
OC
Note 1. Stresses listed as the above Absolute Maximum Ratingsmay cause permanent damage to the device.
These are for stress ratings. Functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may remain possibility to affect device reliability.
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
Note 4. The device is not guaranteed to function outside its operating conditions.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. C03, File Name: uP1715-DS-C0300
6

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