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AIC
Analog Intergrations
Description : MICROPOWER INVERTING DC/DC CONVERTER

DESCRIPTION
The AIC1652 is a high performance INVERTING DC/DC CONVERTER, designed to drive an external power switch to generate programmable negative voltages. In the particularly suitable LCD bias contrast application, efficiency of 87% can be achieved with low cost PNP bipolar transistor drivers. Output voltage can be scaled to -40V or greater by two external resistors.

FEATURES
● 2.4V to 7V Input Voltage Operation.
ADJUSTABLE Output Voltage up to -40V.
● Low Quiescent Current at 80mA.
● Pulse Frequency Modulation Maintains High Efficiency (87%).
● 70KHz to 160KHz Switching Frequency.
● Power-Saving Shutdown Mode (0.7mA Typical).
● High Efficiency with Low Cost External PNP Bipolar Transistor.

APPLICATIONS
● Negative LCD Contrast Bias for
    1. Notebook & Palmtop Computers.
    2. Pen-Based Data System.
    3. Portable Data Collection Terminals.
    4. Personal Digital Assistants.
● Negative Voltage Supply.

AIC
Analog Intergrations
Description : 3-Cell, High-Efficiency, INVERTING DC/DC CONVERTER

DESCRIPTION
The AIC1650 is a high performance INVERTING DC/DC CONVERTER, designed to drive an external power switch to generate programmable negative voltages. In the particularly suitable LCD bias contrast application, maximum efficiency of 90% can be achieved with low cost PNP bipolar transistor drivers. 4V to 20V input operation range allows the AIC1650 to be powered directly by the battery pack in most batteryoperated applications for greater efficiency.

FEATURES
● 4V to 20V Input Voltage Operation.
ADJUSTABLE Output Voltage up to -40V.
● Low Quiescent Current at 100µA.
● Pulse Frequency Modulation Maintains High Efficiency (max. 90%).
● 100KHz to 320KHz Switching Frequency.
● Power-Saving Shutdown Mode (8µA Typical).
● High Efficiency with Low Cost External PNP Bipolar Transistor.

APPLICATIONS
● Negative LCD Contrast Bias for
    1. Notebook & Palmtop Computers.
    2. Pen-Based Data System.
    3. Portable Data Collection Terminals.
    4. Personal Digital Assistants.
● Negative Voltage Supply.

Xlsemi
XLSEMI
Description : 400KHz 60V 4A Switching Current Boost / Buck-Boost / INVERTING DC/DC CONVERTER

General Description
The XL6009 regulator is a wide input range, current mode,DC/DC CONVERTER which is capable of generating either positive or negative output voltages.

 

Semtech
Semtech Corporation
Description : MICROPOWER INVERTING DC-DC CONVERTER

DESCRIPTION
The SC1652 is a high performance INVERTING DC-DC CONVERTER, designed to drive an external power switch to generate programmable negative voltages. In the particularly suitable LCD bias contrast application, efficiency of 87% can be achieved with low cost PNP bipolar transistor drivers. The output voltage can be scaled to -40V by two external resistors. A pulse frequency modulation scheme is employed to maintain high efficiency conversion under wide input voltage ranges. Quiescent current is about 80µA and can be reduced to 0.7µA in shutdown mode. With a switching frequency range of 70kHz to 160kHz, small size switching components may be used, which is ideal for battery powered portable equipment such as notebook and palmtop computers.
   
FEATURES
• 2.4V to 7V input voltage operation
ADJUSTABLE output voltage up to -40V
• Low quiescent current at 80µA
• Pulse frequency modulation maintains high
    efficiency (max 87%)
• 70kHz to 160kHz switching frequency
• Power-saving shutdown mode (0.7µA typical)
• High efficiency with low cost external PNP bipolar
    transistor
   
APPLICATIONS
• Negative LCD Contrast Bias for
    1. Notebook & palmtop computers
    2. Pen-based data systems
    3. Portable data collection terminals
    4. Personal digital assistants
• Negative voltage supplies
   

ADI
Analog Devices
Description : Micropower DC-DC CONVERTER ADJUSTABLE and Fixed 3.3 V, 5 V, 12 V

GENERAL DESCRIPTION
The ADP1108 is a highly versatile micropower switch-mode dc-dc CONVERTER that operates from an input voltage supply as low as 2.0 V and typically starts up from 1.8 V. The ADP1108 can be programmed into a step-up or step-down dc-to-dc CONVERTER with only three external components. The fixed outputs are 3.3 V, 5 V and 12 V. An ADJUSTABLE version is also available. In step-up mode, supply voltage range is 2.0 V to 12 V, and 30 V in step-down mode. The ADP1108 can deliver 150 mA at 5 V from a 2 AA cell input and 300 mA at 5 V from a 9 V input in step down mode. Switch current limit can be programmed with a single resistor.

FEATURES
Operates at Supply Voltages From 2.0 V to 30 V
Consumes Only 110 mA Supply Current
Step-Up or Step-Down Mode Operation
Minimum External Components Required
Low Battery Detector Comparator On-Chip
User-ADJUSTABLE Current Limit
Internal 1 A Power Switch
Fixed or ADJUSTABLE Output Voltage Versions
8-Pin DIP or SO-8 Package

SSC
Silicon Standard Corp.
Description : High-Efficiency, INVERTING DC/DC Controller

High-Efficiency, INVERTING DC/DC Controller

Semtech
Semtech Corporation
Description : HIGH-VOLTAGE INVERTING DC-DC CONVERTER

DESCRIPTION
The SC1650 is a high performance INVERTING DC-DC CONVERTER, designed to drive an external power switch to generate programmable negative voltages. In the particularly suitable LCD bias contrast application, maximum efficiency of 90% can be achieved with low cost PNP bipolar transistor drivers. The 4V to 24V input operation range allows the SC1650 to be powered directly by the battery pack in most batteryoperated applications for greater efficiency. The output voltage can be scaled to -40V by two external resistors. A pulse frequency modulation scheme is employed to maintain high efficiency conversion under wide input voltage ranges. Quiescent current is about 100µA and can be reduced to 8µA in shutdown mode. With a switching frequency range of 100kHz to 320kHz, small size switching components may be used, which is ideal for battery powered portable equipment such as notebook and palmtop computers.

FEATURES
 • 4V to 24V input voltage operation
 • ADJUSTABLE output voltage up to -40V
 • Low quiescent current at 100µA
 • Pulse frequency modulation maintains high efficiency (max 90%)
 • 100kHz to 320kHz switching frequency
 • Power-Saving shutdown mode (8µA typical)
 • High efficiency with low cost external PNP bipolar transistor

APPLICATIONS
 • Negative LCD contrast bias for
    1. Notebook & palmtop computers
    2. Pen-based data systems
    3. Portable data collection terminals
    4. Personal digital assistants
 • Negative voltage supplies

ADIMOS
Advanced Monolithic Systems Inc
Description : DC-TO-DC CONVERTER CONTROL CIRCUIT

GENERAL DESCRIPTION
The AMS34063 series is a control circuit containing the basic functions required for DC-to-DC CONVERTERs. The device consists of an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit circuit, a driver and a high current output switch. Designed specifically to be incorporated in Step-Up, Step-Down and Voltage -INVERTING applications, the AMS34063 requires a minimum number of external components.
The AMS34063 is available in the 8-lead plastic SOIC and 8-lead plastic DIP packages.

FEATURES
• Wide Input Voltage Operating Range from 2.5V to 40V
• Low Standby Current
• Current Limiting
• Output Switch Current of 1.5A
• Output Voltage ADJUSTABLE from 1.25 to 40V
• Frequency of Operation to 100kHz

APPLICATIONS
• Step-Up CONVERTER
• Step-Down CONVERTER
• Voltage INVERTING Application

Part Name(s) : AN8014 AN8014S
Panasonic
Panasonic Corporation
Description : Step-down, step-up, or INVERTING DC-DC CONVERTER control IC

■ Overview
The AN8014S is a single-channel PWM DC-DC CONVERTER control IC.
This IC can provide any one output type from among step-down, step-up and INVERTING output.
Allowing n-channel power MOSFET direct driving, the AN8014S is ideal for high-efficiency power supplies.

■ Features
• Wide operating supply voltage range (3.6 V to 34 V)
    (The voltage is limited within a range between 3.6 V and 17 V if it is connected to a step-down voltage circuit.)
• Totem pole output circuit: output peak current (±1 A)
• On-chip pulse-by-pulse overcurrent detection and protection circuit
    Threshold voltage VCC − 0.095 V typical
• On-chip bootstrap circuit (allowing n-channel MOSFET direct driving.)
• On-chip under-voltage lock-out circuit (U.V.L.O.)
• On-chip on/off function (active-high control input, standby current of maximum 5 µA)
• On-chip timer latch short-circuit protection circuit
• Maximum oscillator frequency (500 kHz)

■ Applications
• DC-DC switching power supply

AIC
Analog Intergrations
Description : Micropower INVERTING DC/DC CONVERTER in SOT-23-5

DESCRIPTION
The AIC1653 is a micropower INVERTING DC/DC CONVERTER in 5-lead SOT-23 package. It is designed for power systems with a 100mA current limit and an input voltage ranging from 1.8V to 10V. Besides, AIC1653 features a quiescent current of only 15µA at no load, which further reduces to 0.5µA when shutdown. The schemes of current limited and fixed off-time control conserve operating current, resulting in high efficiency over a broad range of load current. In addition, the 30V switch of AIC1653 allows high voltage outputs up to -28V, which is easily generated without the use of costly transformers. The AIC1653’s low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.

FEATURES
● Low Quiescent Current:
    ▪ 15µA in Active Mode
    ▪ <1µA in Shutdown Mode
● Operates with VIN as Low as 1.8V
● Uses Small Surface Mount Components
● High Output Voltage: Up to -28V
● Low profile 5-Lead SOT-23-5 Package

APPLICATIONS
● LCD Bias
● Hand-Held Computers
● Battery Backup
● Digital Still Cameras

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