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ISL80083IIZ-TS PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL80083IIZ-TS
部品説明 2.5MHz Integrated Power Management IC
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 



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ISL80083IIZ-TS Datasheet, ISL80083IIZ-TS PDF,ピン配置, 機能
2.5MHz Integrated Power Management IC with I2C
Compatible Interface
ISL80083
ISL80083 is an integrated mini Power Management IC
(mini-PMIC) for powering low-voltage microprocessor, or
applications using a single Li-Ion or Li-Polymer cell battery to
power multiple voltage rails. ISL80083 integrates a
high-efficiency 2.5MHz synchronous step-down converter, a
low-input low-dropout linear regulator, 33MHz oscillator, level
shift, and input supply select.
The 2.5MHz PWM switching frequency allows for the use of
very small external inductors and capacitors. The step-down
converter can enter skip mode under light load conditions to
further improve the efficiency and maximize the battery life.
For noise sensitive applications, it can also be programmed
through I2C interface to operate in forced PWM mode,
regardless of the load current condition. The I2C interface
supports on-the-fly control of the output voltage from 0.625V
to 2.225V at 25mV/step size for dynamic power saving. The
step-down converter can supply up to 800mA load current.
ISL80083 also provides a 300mA low dropout (LDO) regulator.
The input voltage range is from 2.6V to 5.5V allowing it to be
powered from one of the on-chip step-down converters or directly
from the battery. The default LDO output comes with factory
pre-set fixed output voltage options between 0.9V to 3.6V.
ISL80083 is available in a 2.11mm x 2.13mm 25 Ball CSP
package.
Features
• 800mA synchronous step-down converter and 300mA,
general-purpose LDO
• 400kb/s I2C-bus series interface transfers the control data
between the host controller and the ISL80083
• Fixed SMPS output voltage I2C programmability
- At 25mV/step. . . . . . . . . . . . . . . . . . . . . . 0.625V to 2.225V
• LDO output voltage I2C programmability
- At 50mV/step. . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9V to 3.6V
• 33MHz oscillator
• Level shift from 1.8V to 3V with enable
• Input select
• Switcher I2C programmable skip mode under light load or
forced fixed switching frequency PWM mode
Applications
• Power cable
100
90 1V - PFM
80
70
60
50
40
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY vs LOAD (3.3VIN, TA = +25°C)
1.0
May 15, 2013
FN7886.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

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