 Features
 Broad programmable charging current:
− from 10 to 300 mA
 Overtemperature protection
 Undervoltage lockout protection
 Overvoltage lockout protection
 Reverse current protection between BAT and
GND pins
 Programmable charge termination current
 Maximum voltage power input: 32 V
 Automatic recharge threshold:
− DIO58020A: 4.25 V
− DIO58020B: 4.215 V
− DIO58020C: 4.2 V
− DIO58020D: 4.05 V
 Final float voltage:
− DIO58020A: 4.4 V
− DIO58020B: 4.365 V
− DIO58020C: 4.35 V
− DIO58020D: 4.2 V
 Charge status output pin
 Trickle charge threshold: 2.5 V
 Soft-start limits inrush current
 Applications
 Wireless phone
 MP3/MP4 player
 Bluetooth device
 Description
The DIO58020 series is a complete constant-current /
constant voltage linear charger for single cell
Lithium-Ion batteries. No external sense resistor is
needed, and no blocking diode is required due to the
internal MOSFET architecture. Thermal feedback
regulates the charge current to limit the die
temperature during high power operation or high
ambient temperature. The final float voltage is fixed at
4.4 V for DIO58020A, 4.365 V for DIO58020B, 4.35 V
for DIO58020C and 4.2 V for DIO58020D, and the
charge current and the terminal current can be
programmed externally with resistors. The input
voltage is up to 32 V.
In communication mode (EN = High, 0 < VIN < 2.8 V),
the series of DIO58020 enters a low current state,
dropping the battery drain current to 25 μA, and
channel resistance is 20 Ω.
The DIO58020 series is available in a small package
with QFN2*2-12.