參數(shù)資料
型號(hào)： P95020ZNQGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132
封裝： QFN-132
文件頁數(shù)： 126/137頁
文件大小： 3533K
代理商： P95020ZNQGI
P95020 / Preliminary Datasheet
Revision 0.7.10
89
2010 Integrated Device Technology, Inc.
10.0 BOOST5
– 1.5A, SYNCHRONOUS PWM BOOST CONVERTER
FEATURES
Current Mode Control, internally compensated
Operation in PWM Mode
Peak Efficiency up to 91%
Initialization and Power Sequencing can be controlled
by host & registers
Output Voltage adjustable in 50mV steps
from 4.05V to 5.0 V
Current Output: 700mA continuous at 5V (V
IN ≥ 3.6V)
Inductor Peak Current Limit / Soft Start
Internal current sensing determines
peak inductor current
Soft Start circuitry
DESCRIPTION
The BOOST5 is a synchronous, fixed frequency boost
converter, delivering high power to the Class D Audio
Power Amplifier and LDOs requiring input voltages greater
than the system voltage. Capable of supplying 5.0V at
700mA, the device contain an internal NMOS switch and
PMOS synchronous rectifier.
A switching frequency of 1.0MHz minimizes solution
footprint by allowing the use of tiny, low profile inductors.
The current mode PWM design is internally compensated,
reducing external parts count.
PWM CONTROLLER
PGND1
SW1
BOOST5_SW1
SR1
CIN
VIN = (3.0V TO 4.5V)
L
1
2
BOOST5_SW2
076
075
073
CONTROL &
MONITORING
VOUT = (4.05V TO 5.0V)
COUT
BOOST5_OUT
074
OPTIONAL
SCHOTTKY
Figure 25
– BOOST5 Block Diagram
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