LTM4719
RECOMMENDED FOR NEW DESIGNS42V Dual Input, Low Noise 150mA Step-Down μModule Regulator with I2C Battery Health Monitor
- Part Models
- 2
- 1ku List Price
- Starting From $14.65
Overview
- Seamless and Automatic Transition between Two Input Power Sources
- Integrated Battery Health Monitor
- Wide Voltage Range for Dual Inputs: 2.4V to 42V
- Battery Health Monitor Input Voltage: 1.8V to 5.5V
- Adjustable Output Range: 1V to 4.2V
- Up to 150mA Continuous Output Current
- Integrated Low-Dropout Linear Regulator: 195mV at 150mA Load for Low Output Noise
- 200kHz to 2.2MHz Switching Frequency
- Synchronization to an External Clock
- Current Mode Control With 60ns Minimum On-time
- Burst Mode® Operation, IQ = 18.5μA
- Programmable Input UVLO Thresholds and Discharge Alarm with Interrupt Output
- Input Valid, Priority Channel, and PG Indicators
- Available in a Compact 64-Pin BGA, 7mm × 7mm × 1.85mm Package
The LTM4719 is a 42V dual input, 150mA synchronous buck power μModule® (micromodule) regulator with an integrated battery health monitor interfaced through I2C. The ultralow quiescent current post-regulation linear regulator draws 560nA (typical) at no load and a 42μA (typical) at full load, which is ideal for battery-operated portable equipment.
The LTM4719 supports seamless transition between two separate input power sources if one of the inputs is lost. The automatic switchover eliminates the need for holdup capacitors and minimizes disturbances on the output rail. The 18.5μA Burst Mode operation quiescent current makes the LTM4719 compatible with many applications.
The LTM4719 has a built-in precision coulomb counter (Q) accessible through an I2C interface. A discharge alarm threshold can be programmed. When the threshold is reached, an interrupt signal is generated at the IRQ pin. Battery voltage (V), battery impedance (Z), and temperature (T) are accessible through I2C. Fault protection features include input undervoltage lockout (UVLO), power good (PG), current limit, and overtemperature (OV) protection.
APPLICATIONS
- Portable Battery-Powered Devices
- Radio, Healthcare, and Industrial Test Equipment
- Uninterruptible Power Supplies
Documentation
Data Sheet 1
User Guide 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTM4719EY#PBF | 64-Ball Chip Scale Package Ball Grid Array [CSP_BGA] | ||
| LTM4719IY#PBF | 64-Ball Chip Scale Package Ball Grid Array [CSP_BGA] |
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTM4719
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTM4719 | 42V Dual Input, Low Noise 150mA Step-Down μModule Regulator with I2C Battery Health Monitor
Resources
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