LP78092 Datasheet, PDF (1/10 Pages) Lowpower Semiconductor inc – Programmable Charge Current Up to 1000mA

Preliminary Datasheet
LP78092
1A Charge And Dual Channel Ultra-Fast CMOS LDO Regulator
General Description
The LP78092 is a PMIC，which has 1ch Charger and
2ch LDO with TQFN16 package.
Its charger 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 charge
voltage is fixed at 4.2V, and the charge current can be
ISET rammed externally with a single resistor. The
charger automatically terminates the charge cycle
when the charge current drops to 1/10th the ISET
rammed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the LP78092 automatically enters a low
current state, dropping the battery drain current to less
than 8µA.
Other features include charge current monitor, under
voltage lockout, automatic recharge and a status pin to
indicate charge termination and the presence of an
input voltage.
The LP78092 contains a dual channel, low noise, and
low dropout regulator sourcing up to 600mA at each
channel. The range of output voltage is from 0.81V to
Vin by operating from 2.5V to 6.5V input.
LP78092 offers 2% accuracy, extremely low dropout
voltage (280mV @ 400mA), and extremely low ground
current, only 75μA per LDO. The shutdown current is
near zero current which is suitable for battery-power
devices. Other features include current limiting, over
temperature, output short circuit protection.
Order Information
LP78092
□□ □
F: Pb-Free
Package Type
QV:TQFN-16
Features
 Charger:
 Programmable Charge Current Up to 1000mA
 No MOSFET, Sense Resistor or Blocking
Diode Required
 Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
 Charges Single Cell Li-Ion Batteries Directly
from USB Port
 8µA Leakage Current in Shutdown
 Drainage Charge Current Thermal Regulation
Status Outputs for LED or System Interface
 LDO:
 Wide Operating Voltage Ranges : 2.5V to 6.0V
 Low-Noise for RF Applications
 High PSRR: -68dB at 1kHz
 No Noise Bypass Capacitor Required
 Dual LDO Outputs (280mV/400mA)
 Ultra-low Quiescent Current 75uA
 Built-in Short-Circuit Protection
 Consumption Available in TQFN-16 Package
 RoHS Compliant and 100% Lead (Pb)-Free
Marking Information
Device
Marking Package Shipping
LP78092QVF
QV:TQFN16 3K/REEL
Applications
 MID/Pad
 Power Bank
 Smart Phone
 Bluetooth Applications
LP78092 – 00 Version 1.0 Feb.-2014 Email: [e-mail] www.lowpowersemi.com Page 1 of 10