參數(shù)資料
型號: P95020NQG
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: 10 X 10 MM, 0.85 MM HEIGHT, QFN-132
文件頁數(shù): 61/169頁
文件大小: 4297K
代理商: P95020NQG
IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
153
2011 Integrated Device Technology, Inc.
LDO MODULE
Features
Four external-use LDOs with 50mA current output
Three external-use LDOs with 150mA current output
Initialization and power sequencing controlled by an
external CPU or the Embedded Microcontroller
Adjustable in 25mV steps from 0.75V to 3.7V
Programmable Over-current
Short Circuit Protection
One user-selectable (3.0V or 3.3V), always-on LDO
with10mA maximum output current
Internal-use LDOs for CKGEN_18, CKGEN_33
Internal-use LDOs for AUDIO_18, AUDIO_33
Internal-use LDO for Micro Processor
Description
The IDTP95020 includes two types of LDOs for external
use: normal LDOs (NMLDO) and one low-power, always
on LDO (LPLDO). There are seven NMLDOs which are
powered by external power inputs.
The always-on
LDO(LDO_LP) is powered by VSYS. All of the external-use
LDOs share a common ground pin. The IDTP95020 also
includes LDOs which are used by other functional blocks
within the device. The LDOs used by the Audio module
(LDO_AUDIO_18 and LDO_AUDIO_33) are powered by a
dedicated power input. The remaining internal-use LDOs
are powered by VSYS. The power-up of each LDO is
controlled by a built-in current-limiter. After each LDO is
enabled, its current-limiter will be turned-on (~100-200
μs)
and then the LDO will ramp up to the configured current-
limit setting. The global enable control and each local
enable control (defined in each local LDO register) are
AND-ed together to enable each specific LDO.
Figure 50. LDO_050 / LDO_150 Block Diagram
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