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參數資料
| 型號： | TPS65510RGTRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, QFN-16 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 929K |
| 代理商： | TPS65510RGTRG4 |
1
FEATURES
DESCRIPTION
APPLICATIONS
www.ti.com .......................................................................................................................................................................................... SLLS917 – SEPTEMBER 2008
LOW-POWER BATTERY BACKUP IC
WITH INTEGRATED BOOST CONVERTER
2
Power-Path Switch to Select Main Battery or
Backup Battery for Real-Time Clock (RTC)
The TPS65510 offers a suitable solution for power
switch to select the main battery or the backup
Integrated Boost DC/DC Converter
battery.
–
Modulation Select by Control Pin (PWMON),
Pulse Frequency Modulation (PFM) or
This device automatically selects the power path. It
depends on the voltage level of the VO_BT pin.
Pulse Width Modulation (PWM)
When the main battery is removed, the power path of
–
Fixed Switching Frequency (PWM, 750 kHz)
the VOUT pin is automatically changed from the
–
Peak Current Mode Control (PWM)
output of 3.3-V low droppout (LDO) voltage regulator
–
Low Power Consumption (PFM)
to the backup battery.
Four Integrated Low Dropout (LDO) Voltage
The backup battery is charged from the power path of
Regulators for 1.2 V/1.8 V/3.3 V
the VRO pin (output of 3.3-V LDO) via an external
diode and resistor. The input of the LDO voltage
Two Integrated Indicators
regulator comes from the internal boost converter.
–
CS: Monitors the Voltage Level of Main
Battery (VBAT) and Output voltage level of
The 1.2-V output LDO and 1.8-V output LDO voltage
regulators have a enable pin, V_CTRL. If these
Boost Converter (VO_BT)
outputs are not necessary, V_CTRL should be
–
XRESET: Monitors the Output voltage Level
connected to AGND to save power consumption. The
of 3.3V LDO (VOUT)
self-power consumption is less than 3
A (maximum)
16-Pin QFN (3mm × 3mm) Package
using the backup battery.
Operating Temperature –35°C to 85°C
This device has two indicators. One is CS, which
Protection
monitors the voltage level of the VBAT pin and
VO_BT pin. The other is XRESET, which monitors
–
Overcurrent Protection (OCP)
voltage level of the VOUT pin. These indicators
–
Overvoltage Protection (OVP)
should be connected to CPU/DSP to reset them.
–
Thermal Shutdown (TSD)
This device reduces the total solution area and
–
Undervoltage Lockout (UVLO)
extends the lifetime of the backup battery.
Digital Still Cameras
Portable Systems With Backup Battery
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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