LINEAR TECHNOLOGY - LTC1983-3 LTC1983-5 Data Sheet User Guide
Summary
The LTC1983 series provides reliable, low-power inverting charge-pump converters designed to generate fixed negative regulated voltages (–3V or –5V) from positive single-supply inputs. Manual details cover advanced features like 100mA output current capability, high accuracy, and automatic protection against over-temperature and shorts. Ideal for portable electronics, such as LCD bias supplies, requiring highly reliable operation in constrained space due to its thin profile and micro-amp quiescent current draw.
Page 1 Text Content
LTC1983-3/LTC1983-5 100m A Regulated Charge-Pump Inverters
in Thin SOT
FEATURES DESCRIPTIO Fixed Output Voltages: –3V, –5V or Low Noise VIN The LTC®1983-3 and LTC1983-5 are inverting charge to –VIN Inverted Output pump DC/DC converters that produce negative regulated ±4% Output Voltage Accuracy outputs. The parts require only three tiny external capaci- Low Quiesient Current: 25µA tors and can provide up to 100m A of output current. The 100m A Output Current Capability devices can operate in open loop mode (creating a –VIN 2.3V to 5.5V Operating Voltage Range supply) or regulated output mode depending on the input Internal 900k Hz Oscillator supply voltage and the output current. “Zero Current” Shutdown
The LTC1983-3/LTC1983-5 have many useful features for
Short-Circuit and Over-Temperature Protected
portable applications including very low quiescent current
Low Profile (1mm) Thin SOTTM Package
(25µA typical) and a zero current shutdown mode pro- grammed through the SHDN pin.
APPLICATIO S
(V The LTC1983-3/LTC1983-5 are over-temperature and
–3V Generation in Single-Supply Systems
short-circuit protected. The parts are available in a 6-pin
Portable Equipment
low profile (1mm) Thin SOT package.
LCD Bias Supplies
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Ga As FET Bias Supplies Thin SOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
–3V at 100m A DC/DC Converter VOUT vs IOUT
VIN VOUT = –3V
VIN VOUT
3V TO 5.5V IOUT = UP TO 100m A
CIN –3.2
10µF LTC1983-3
GND –3.1
OFF ON SHDN
VIN = 5V
1983-3 TA01
VIN = 3.3V
CFLY 1µF –2.8
CFLY: TAIYO YUDEN LMK212BJ105 CIN, COUT: TAIYO YUDEN JMK316BJ106ML –2.7
IOUT (m A)
1983 TA02
1983fa
Page Summary Contents For LINEAR TECHNOLOGY - LTC1983-3 LTC1983-5 Data Sheet User Guide
Manual Details
| Brand | Linear |
|---|---|
| Pages | 12 |
| File Size | 159.74 KB |
| Published | June 16, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What is the primary function of the LTC1983 devices?
They are inverting charge pump DC/DC converters designed to produce negative regulated voltages like -3V or -5V.
What kind of supplies can these parts generate?
They can create negative regulated voltage rails such as –3V, –5V, and Low Noise V for systems like LCD bias supplies.
Does the device have protection features?
Yes, it includes built-in protection against over-temperature, short-circuit, and is suitable for portable applications.
What is the typical output current capability?
The devices can provide up to 100mA of regulated output current.