Features: ` Synchronous 95% Efficient Boost Converter
` Integrated 120 mA LDO for Second Output Voltage
` TSSOP-20 and QFN-24 Package
` 65 A (Typ) Total Device Quiescent Current
` 0.8 V to 3.3 V Input Voltage Range
` Adjustable Output Voltage up to 5.5 V and Fixed Output Voltage Options
` Power-Save Mode for Improved Efficiency at Low Output Power
` Battery Supervision
` Power Good Output
` Pushbutton Function for Start-Up
` Low EMI-Converter (Integrated Antiringing Switch)
` Load Disconnect During Shutdown
` Auto Discharge Allows the Device to Discharge Output Capacitor During Shutdown
` Overtemperature Protection
` EVM Available (TPS6110XEVM-216)
Application· All Single or Dual Cell Battery Operated Products Which Use Two System Voltages Like DSP C5X Applications
· Internet Audio Player, PDAs, Digital Still Cameras and Other Portable Equipment
Pinout
Specificationsover operating free-air temperature range (unless otherwise noted)
| |
UNIT |
| Input voltage range on VBAT, LBI, SKIPEN, EN, ENPB, ADEN, FB, LDOEN |
-0.3 V to 3.6 V |
| Input voltage range on SWN, VOUT, LDOIN, LDOOUT, LDOSENSE, PGOOD, LBO1, LBO2 |
-0.3 V to 7 V |
| Operating free air temperature range, TA |
-40 to 85 |
| Maximum junction temperature, TJ |
150 |
| Storage temperature range, Tstg |
-65 to 150 |
| Lead temperature 1,6 mm (1/16 inch) from case for 10s |
260 |
(1) Stresses beyond those listed under,, absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under,, recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DescriptionThe TPS6110x devices provide a complete power supply solution for products powered by either one or two Alkaline, NiCd, or NiMH battery cells. The converter generates two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. TPS6110x stays in operation with supply voltages down to 0.8 V.
The implemented boost converter of TPS6110x is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency.
The maximum peak current of TPS6110x in the boost switch is limited to a value of 1800 mA.
The TPS6110x can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. An auto discharge function allows discharging the output capacitors during shutdown mode.
TPS6110x is especially useful in microcontroller applications where the microcontroller or microprocessor should not remain active due to the stored voltage on the output capacitors. Programming the ADEN-pin disables this feature. A low-EMI mode of TPS6110x is implemented to reduce ringing and in effect lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the boost stage provides additional control of cascaded power supply components.
The built-in LDO of TPS6110x can be used for a second output voltage derived either from the boost output or directly from the battery. The output voltage of this LDO TPS6110x can be programmed by an external resistor divider or is fixed internally on the chip. The LDO can be enabled separately i.e., using the power good of the boost stage.
The TPS6110x is packaged in a 20-pin TSSOP (20 PW) package or in a 24-pin QFN (24 RGE) package
TPS61106 Data Sheet
