# LT3652 Power Tracking 2A Battery Charger (SMD)

**Type:** Product page · **SKU:** COM-29756 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-lt3652-2a-solar-battery-charger-ic-smd.html ([markdown](https://core-electronics.com.au/sparkfun-lt3652-2a-solar-battery-charger-ic-smd.html.md))

The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a...

## Pricing

- **Price:** $17.60 (inc GST) — $16.00 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 21.

## Description

The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any desired battery float voltage up to 14.4V can be programmed with a resistor divider.

The LT3652 employs an input voltage regulation loop, which reduces charge current if the input voltage falls below a programmed level, set with a resistor divider. When the LT3652 is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power.

The LT3652 can be configured to terminate charging when charge current falls below 1/10 of the programmed maximum (C/10). Once charging is terminated, the LT3652 enters a low-current (85µA) standby mode. An auto-recharge feature starts a new charging cycle if the battery voltage falls 2.5% below the programmed float voltage. The LT3652 also contains a programmable safety timer, used to terminate charging after a desired time is reached. This allows top-off charging at currents less than C/10.

### Features & Specs

- Current - Charging: Constant - Programmable
- Programmable Features: Current, Timer
- Charge Current - Max: 2A
- Battery Pack Voltage: 14.4V
- Voltage - Supply (Max): 32V
- Operating Temperature: -40°C ~ 125°C (TJ)
- Mounting Type: Surface Mount
- Mfg #: LT3652EMSE#PBF
 
### Documentation

- [Datasheet](https://cdn.sparkfun.com/assets/2/2/5/3/2/LT3652_datasheet_COM-29756.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/O/COM-29756-1.jpg)