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Details, datasheet, quote on part number:TPS62000
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Datasheet text preview:
TPS62000, TPS62001, TPS62002, TPS62003 TPS62004, TPS62005, TPS62006, TPS62007, TPS62008 HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
SLVS294B SEPTEMBER 2000 REVISED JUNE 2002
features
D D D D D D D D D
D D D D D D D D D D D
High-Efficiency Synchronous Step-Down Converter With Greater Than 95% Efficiency 2 V to 5.5 V Operating Input Voltage Range Adjustable Output Voltage Range From 0.8 V to VI Fixed Output Voltage Options Available in 0.9 V, 1 V, 1.2 V, 1.5 V, 1.8 V, 1.9 V, 2.5 V, and 3.3 V Synchronizable to External Clock Signal up to 1 MHz Up to 600 mA Output Current Pin-Programmable Current Limit High Efficiency Over a Wide Load Current Range in Power Save Mode 100% Maximum Duty Cycle for Lowest Dropout
Low-Noise Operation Antiringing Switch and PFM/PWM Operation Mode Internal Softstart 50-µA Quiescent Current (TYP) Available in the 10-Pin Microsmall Outline Package (MSOP) Evaluation Module Available
applications
Low-Power CPUs and DSPs Cellular Phones Organizers, PDAs, and Handheld PCs MP-3 Portable Audio Players Digital Cameras USB-Based DSL Modems and Other Network Interface Cards
description
The TPS6200x devices are a family of low-noise synchronous step-down dc-dc converters that are ideally suited for systems powered from a 1-cell Li-ion battery or from a 2- to 3-cell NiCd, NiMH, or alkaline battery. The TPS6200x operates typically down to an input voltage of 1.8 V, with a specified minimum input voltage of 2 V.
EFFICIENCY vs LOAD CURRENT
100 90 80 70 Efficiency % 60 50 40 30 20 10 0 0.1 VI = 3.6 V, VO = 2.5 V 1 10 100 IO Load Current mA 1000 SYNC = High
7 10 µF 8 VI = 2 V to 5.5 V 1 VIN L 9 10 µH VO = 0.8 V to VI
SYNC = Low
6
EN
FB
5 10 µF 10 4
TPS6200x ILIM SYNC GND 3 PGND PG FC 2 0.1 µF
PG
With VO 1.8 V; Co = 10 µF, VO <1.8 V; Co = 47 µF
Figure 1
Figure 2. Typical Application Circuit for Fixed Output Voltage Option
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.
Copyright 2002, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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TPS62000, TPS62001, TPS62002, TPS62003 TPS62004, TPS62005, TPS62006, TPS62007, TPS62008 HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
SLVS294B SEPTEMBER 2000 REVISED JUNE 2002
description (continued)
The TPS6200x is a synchronous current-mode PWM converter with integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase efficiency and to reduce external component count. To achieve the highest efficiency over a wide load current range, the converter enters a power-saving pulse-frequency modulation (PFM) mode at light load currents. Operating frequency is typically 750 kHz, allowing the use of small inductor and capacitor values. The device can be synchronized to an external clock signal in the range of 500 kHz to 1 MHz. For low-noise operation, the converter can be operated in the PWM mode and the internal antiringing switch reduces noise and EMI. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS6200x is available in the 10-pin (DGS) microsmall outline package (MSOP) and operates over a free-air temperature range of 40°C to 85°C.
MSOP (DGS) PACKAGE (TOP VIEW)
VIN FC GND PG FB
1 2 3 4 5
10 9 8 7 6
PGND L EN SYNC ILIM
AVAILABLE OPTIONS TA VOLTAGE OPTIONS OPTIONS Adjustable 0.9 V 1V 1.2 V 40°C to 85°C 1.5 V 1.8 V 1.9 V 2.5 V PACKAGE MICROSMALL OUTLINE (DGS) TPS62000DGS TPS62001DGS TPS62002DGS TPS62003DGS TPS62004DGS TPS62005DGS TPS62008DGS TPS62006DGS MARKING DGS AIH AII AIJ AIK AIL AIM AJI AIN
3.3 V TPS62007DGS AIO The DGS package is available taped and reeled. Add R suffix to device type (e.g. TPS62000DGSR) to order quantities of 2500 devices per reel.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS62000, TPS62001, TPS62002, TPS62003 TPS62004, TPS62005, TPS62006, TPS62007, TPS62008 HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER
SLVS294B SEPTEMBER 2000 REVISED JUNE 2002
functional block diagram
PG FC (See Note B) VIN
Undervoltage Lockout Bias Supply EN Power Good + _ Slope Compensation PFM/PWM Mode Select PFM/PWM Comparator _ +
10
Current Sense
P-Channel Power MOSFET
R1 FB (See Note A)
Error Amplifier _ + Soft Start
PFM/PWM Control Logic Current Limit Logic
Driver Shoot-Through Logic
L
Compensation N-Channel Power MOSFET Sync + Oscillator Load Comparator + _ Current Sense + Offset PGND Antiringing FB
R2 R1 + R2 1 M + _ EN Vref = 0.45 V
GND
SYNC
ILIM
NOTES: A. The adjustable output voltage version does not use the internal feedback resistor divider. The FB pin is directly connected to the error amplifier. B. Do not connect the FC pin to an external power source
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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