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Part: TPS61000DGS
Category:
Power Management
-> Regulators
-> Switching Regulators
Description: Single-and Dual-cell Boost Converter With Start-up Into Full Load
Company: Texas Instruments, Inc.
Datasheet: Download TPS61000DGS datasheet File size : 1534 kB
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Datasheet text preview:
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007 SINGLE-AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279B MARCH 2000 REVISED AUGUST 2000
D D D D D D
·
Start Up Into a Full Load With Supply Voltages as Low as 0.9 V Over Full Temperature Range Minimum 100-mA Output Current From 0.8-V Supply Voltage, 250 mA From 1.8 V High Power Conversion Efficiency, up to 90% Power-Save Mode for Improved Efficiency at Low Output Currents Device Quiescent Current Less Than 50 µA Added System Security With Integrated Low-Battery Comparator
D D D D
Low-EMI Converter (Integrated Antiringing Switch Across Inductor) Micro-Size 10-Pin MSOP Package Evaluation Modules Available (TPS6100xEVM156) Applications Include: Single- and Dual-Cell Battery Operated Products MP3-Players and Wireless Headsets Pagers and Cordless Phones Portable Medical Diagnostic Equipment Remote Controls
description
The TPS6100x devices are boost converters intended for systems that are typically operated from a single- or dual-cell nickel-cadmium (NiCd), nickel-metal hydride (NiMH), or alkaline battery. The converter output voltage can be adjusted from 1.5 V to a maximum of 3.3 V and provides a minimum output current of 100 mA from a single battery cell and 250 mA from two battery cells. The converter starts up into a full load with a supply voltage of 0.9 V and stays in operation with supply voltages as low as 0.8 V. The converter is based on a fixed-frequency, current-mode pulse-width-modulation (PWM) controller that goes into power-save mode at low load currents. The current through the switch is limited to a maximum of 1100 mA, depending on the output voltage. The current sense is integrated to further minimize external component count. The converter can be disabled to minimize battery drain when the system is put into standby. A low-EMI mode is implemented to reduce interference and radiated electromagnetic energy that is caused by the ringing of the inductor when the inductor discharge-current decreases to zero. The device is packaged in the space-saving 10-pin MSOP package.
L1 Ci 10 µF 33 µH 6 VBAT R1 R2 8 NC ON OFF 1 EN GND 4 COMP 2 C1 100 pF 7 SW VOUT 5 R3 9 LBI TPS61006 FB 3 R4 10 k LBO 10 Low Battery Warning D1 TPS61006 VO = 3.3 V
START UP TIMING INTO 33- LOAD
140 VOUT 3 120 100 2 IOUT 80 60 1 40 20 0
Co 22 µF VO Output Voltage V
C2 33 nF 0
EN
TYPICAL APPLICATION CIRCUIT FOR FIXED OUTPUT VOLTAGE OPTION
0
2
4
6
8
10 12 time ms
14
16
18
20
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.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 2000, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
I O Output Current mA 1
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007 SINGLE-AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279B MARCH 2000 REVISED AUGUST 2000
AVAILABLE OPTIONS TA PACKAGE OUTPUT VOLTAGE (V) Adj. from 1.5 V to 3.3 V 1.5 1.8 40°C to 85°C to 85°C 10-Pin MSOP DGS MSOP DGS 2.5 2.8 3.0 3.3 PART NUMBER TPS61000DGS TPS61001DGS TPS61002DGS TPS61003DGS TPS61004DGS TPS61005DGS TPS61006DGS MARKING DGS PACKAGE ADA ADB ADC ADD ADE ADF ADG
Adj. from 1.5 V to 3.3 V TPS61007DGS ADH The DGS package is available taped and reeled. Add R suffix to device type (e.g. TPS61000DGSR) to order quantities of 2500 devices per reel.
Terminal Functions
TERMINAL NAME COMP EN NO. 2 1 I I/O DESCRIPTION Compensation of error amplifier. Connect R-C-C network to set frequency response of control loop. See the Application section for more details. Chip-enable input. The converter is switched on if EN is set high, and is switched off when EN is connected to ground (shutdown mode). Feedback input for adjustable output voltage (TPS61000 only). The output voltage is programmed depending on the values of resistors R1 and R2. For the fixed output voltage versions (TPS61000, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006), leave the FB pin unconnected. Not connected (TPS61000, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006). A ground pin for the feedback resistor divider for the TPS61007 only. Ground I Low-battery detector input. A low-battery signal is generated at the LBO pin when the voltage on LBI drops below the threshold of 500 mV. Connect LBI to GND or VBAT if the low-battery detector function is not used. Do not leave this pin floating. Open-drain low-battery detector output. This pin is pulled low if the voltage on LBI drops below the threshold of 500 mV. A pullup resistor should be connected between LBO and VOUT. Switch input pin. The node between inductor and anode of the rectifier diode is connected to this pin. Supply pin Output voltage. For the fixed output voltage versions, the integrated resistive divider is connected to this pin. DGS PACKAGE (TOP VIEW)
FB
3
I
NC/FBGND GND LBI
8 4 9
LBO SW VBAT VOUT
10 7 6 5
O I I O
EN COMP FB GND VO U T
1 2 3 4 5
10 9 8 7 6
LBO LBI NC/FBGND SW VBAT
TPS61007 only
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS61000, TPS61001, TPS61002, TPS61003, TPS61004, TPS61005, TPS61006, TPS61007 SINGLE-AND DUAL-CELL BOOST CONVERTER WITH START-UP INTO FULL LOAD
SLVS279B MARCH 2000 REVISED AUGUST 2000
functional block diagram
fixed output-voltage option
L1 CI Antiringing Comparator and Switch SW D1 VOUT CO
VBAT
UVLO EN LBI/LBO Comparator LBI VREF LBO
Control Logic Oscillator Gate Drive
Current Sense Current Limit Slope Compensation
Comparator
Error Amplifier
Bandgap Reference
GND
COMP
adjustable output-voltage option (TPS61000 only)
L1 CI Antiringing Comparator and Switch SW D1 CO
VBAT
VOUT
UVLO EN LBI/LBO Comparator LBI
Control Logic Oscillator Gate Drive
Current Sense Current Limit Slope Compensation
FB VREF LBO Comparator Error Amplifier Bandgap Reference
GND
COMP
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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