SGMicro（圣邦微）SGM40561高输入电压单电池充电器数据手册

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GENERAL DESCRIPTION
The SGM40561 is a fully integrated high input voltage
single-cell Li-Ion battery charger. The charger uses a
CC/CV charge profile required by Li-Ion battery. The
charger accepts an input voltage up to 26.5V but is
disabled when the input voltage exceeds the OVP
threshold, typically 10.5V, to prevent excessive power
dissipation. The 26.5V rating eliminates the overvoltage protection circuit required in a low input voltage
charger.
The charge current and the full-of-charge (FOC) current
are programmable with external resistors. When the
battery voltage is lower than typically 2.55V
(SGM40561-4.2), 2.62V (SGM40561-4.3) or 2.65V
(SGM40561-4.35), the charger preconditions the
battery with typically 19% of the programmed charge
current. When the charge current reduces to the
programmable FOC current level during the CV charge
phase, an FOC indication is provided by the CHG pin,
which is an open-drain output. An internal thermal
foldback function protects the charger from any thermal
failure.
Two indication pins ( PPR and CHG ) allow simple
interface to a microprocessor or LEDs. When no
adapter is attached or when disabled, the charger
draws less than 1μA leakage current from the battery.
The SGM40561 is available in Green TDFN-2×2-8L
package and is rated over the -40℃ to +85℃
temperature range.
FEATURES
● 4.2V/4.3V/4.35V Charge Voltage
● 5mA to 200mA Charger for Tiny Cell Li-Ion or
Polymer Batteries
● Integrated Pass Element and Current Sensor
● No External Blocking Diode Required
● Low Component Count
● Programmable Charge Current
● Programmable Full-of-Charge Current
● Charge Current Thermal Foldback Protection
● 2.55V/2.62V/2.65V Trickle Charge Threshold
● 10.5V Input Over-Voltage Protection
● 26.5V Maximum Voltage Power Input
● Power Presence and Charging Indications
● Less than 1μA Leakage Current off the Battery
When No Input Power Attached or Charger
Disabled
● Available in Green TDFN-2×2-8L Package
APPLICATIONS
IOT Gadgets
Wearable Devices
Credential Keys
Wireless Remote
SGMicro（圣邦微）SGM40561高输入电压单电池充电器数据手册.pdf (951 KB, 下载次数: 1)

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