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CAT7117 PDF даташит

Спецификация CAT7117 изготовлена ​​​​«Chip Advanced Technology» и имеет функцию, называемую «Dual Channel 800mA High Efficiency Step-Down DC/DC Converter».

Детали детали

Номер произв CAT7117
Описание Dual Channel 800mA High Efficiency Step-Down DC/DC Converter
Производители Chip Advanced Technology
логотип Chip Advanced Technology логотип 

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CAT7117 Даташит, Описание, Даташиты
CAT7117
Dual Channel 800mA High Efficiency Step-Down DC/DC Converter
Confidentiality Statement:
This Data Sheet (including any attachments) is for the sole use of the intended
recipient(s) and contains confidential, proprietary and privileged information. Any
unauthorized review, use, disclosure or distribution is prohibited. If you are not the
intended recipient, please immediately destroy all copies of the original message.









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CAT7117 Даташит, Описание, Даташиты
Dual Channel 800mA High Efficiency Step-Down DC/DC Converter
CAT7117
General Description
The CAT7117 is a high efficiency step-down DC/DC
converter using a constant frequency, current mode
architecture. The device integrates a main switch
and a synchronous rectifier for high efficiency
without an external schottky diode. Supply current
during operation is only 300µA and drops to < 1µA
in shutdown. The CAT7117 can supply 800mA of
load current from 2.5V to 5.5V input voltage. The
output voltage can be regulated as low as 0.6V.
Switching frequency is internally set at 1.8MHz,
allowing the use of small surface mount inductors
and capacitor. It can also run 100% duty cycle for
low dropout applications.
Application
Cellular Telephones
PDAs and Smart Phones
MP3 Players
Microprocessors and DSP Core Supplies
Wireless and DSL Card
Digital Still Cameras
Slim-Type DVD
Portable Instruments
Pin Configuration
Features
High Efficiency up to 95%
Low Quiescent Current < 300uA (active mode)
2.5V to 5.5V Input Voltage Range
800mA Output Current on each Channel
Fix Frequency Operation
Full Duty ratio, 0 – 100% in Dropout
0.6V Reference Allows Low Output Voltages
Current Mode Operation
Internal soft-start
Over-temperature Protected
< 0.1µA Shutdown Current
DFN3x3 small Package
RoHS Compliant (100% Green available)
Ordering Information
Part Number
CAT7117CE
Package
DFN10 3x3
Ship
2500/ Tape & Reel
Typical Application
The CAT logo is a registered trademark of Chip Advanced Technology
2007 Chip Advanced Technology Inc. – All Right Reserved.
Efficiency Table
Efficiency VS Output Current at VIN=5V
100
90
80
70
60
50
0
3.3V
1.8V
1.20V
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Output Current (A)
Jan-2008 Rev:1.5 2/12









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CAT7117 Даташит, Описание, Даташиты
Dual Channel 800mA High Efficiency Step-Down DC/DC Converter
CAT7117
Pin Description
Pin Symbol Description
Channel1 Regulator enable control input Pin. Drive EN1 above 1.5V to turn on
1 EN1 Channel1.
Drive EN1 below 0.3V to turn it off (shutdown current < 0.1uA).
2 FB1 Channel1 Voltage feedback Pin.
3 VIN2 Channel2 Main supply Pin.
4 GND2 Channel2 Ground Pin.
5 SW2 Channel2 Power switch output
Channel2 Regulator enable control input Pin. Drive EN2 above 1.5V to turn on
6 EN2 Channel2.
Drive EN2 below 0.3V to turn it off (shutdown current < 0.1uA).
7 FB2 Channel2 Voltage feedback Pin.
8 VIN1 Channel1 Main supply Pin.
9 GND1 Ground Pin.
10 SW1 Channel1 Power switch output
Function Block Diagram
The CAT logo is a registered trademark of Chip Advanced Technology
2007 Chip Advanced Technology Inc. – All Right Reserved.
01/03/2008 Rev:1.5 3/12










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Номер в каталогеОписаниеПроизводители
CAT7117Dual Channel 800mA High Efficiency Step-Down DC/DC ConverterChip Advanced Technology
Chip Advanced Technology

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