Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Switched-capacitor voltage converter VSSOP 10

 

     

   

SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

features

D Regulated 3.3-V Output Voltage With up to

100-mA Output Current From a 1.8-V to

3.6-V Input Voltage

D Less Than 5-mV

(PP)

Output Voltage Ripple

Achieved With Push-Pull Topology

D Integrated Low-Battery and Power-Good

Detector

D Switching Frequency Can Be Synchronized

to External Clock Signal

D Extends Battery Usage With up to 90%

Efficiency and 35-µA Quiescent Supply

Current

D Easy-to-Design, Low Cost, Low EMI Power

Supply Since No Inductors Are Used

D 0.05-µA Shutdown Current, Battery is

Isolated From Load in Shutdown Mode

D Compact Converter Solution in UltraSmall

10-pin MSOP With Only Four External

Capacitors Required

D Evaluation Module Available

(TPS60200EVM-145)

applications

D Replaces DC/DC Converters With Inductors

in Battery Powered Applications Like:

− Two Battery Cells to 3.3-V Conversion

− MP3 Portable Audio Players

− Battery-Powered Microprocessor

Systems

− Backup-Battery Boost Converters

− PDA’s, Organizers, and Cordless Phones

− Handheld Instrumentation

− Glucose Meters and Other Medical

Instruments

description

The TPS6020x step-up, regulated charge pumps generate a 3.3-V ±4% output voltage from a 1.8-V to 3.6-V

input voltage. The devices are typically powered by two Alkaline, NiCd, or NiMH battery cells and operate down

to a minimum supply voltage of 1.6 V. Continuous output current is a minimum of 100 mA from a 2-V input. Only

four external capacitors are needed to build a complete low-ripple dc/dc converter. The push-pull operating

mode of two single-ended charge pumps assures the low output voltage ripple, as current is continuously

transferred to the output.

Figure 1. Typical Application Circuit

With Low-Battery Warning

OUTPUT

3.3 V, 100 mA

INPUT

1.6 V to 3.6 V

OFF/ON

Low Battery

Warning

C1−

C1+

LBI

TPS60204

OUT

C2−

C2+

LBO

GND

TPS60204

PEAK OUTPUT CURRENT

INPUT VOLTAGE

150

100

1.6 2.0 2.4 2.8

200

250

350

3.2 3.6

300

− Input Voltage − V

− Peak Output Current − mA

2.2 µF

1 µF

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.

  !"#$%&#! ' ()$$*!& %' #" +),-(%&#! .%&*

$#.)(&' (#!"#$ &# '+*("(%&#!' +*$ &/* &*$' #" *0%' !'&$)*!&'

'&%!.%$. 1%$$%!&2 $#.)(&#! +$#(*''!3 .#*' !#& !*(*''%$-2 !(-).*

&*'&!3 #" %-- +%$%*&*$'

Summary of content (21 pages)

PAGE 1
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 D Compact Converter Solution in UltraSmall features D Regulated 3.3-V Output Voltage With up to D D D D D D 100-mA Output Current From a 1.8-V to 3.
PAGE 2
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 description (continued) The devices operate in the newly developed LinSkip mode. In this operating mode, the device switches seamlessly from the power saving pulse-skip mode at light loads to the low-noise constant-frequency, linear-regulation mode once the output current exceeds the LinSkip threshold of about 7 mA.
PAGE 3
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 functional block diagrams TPS60204 with low-battery detector Charge Pump 1 0° IN Oscillator 180° C1+ C1 C1− EN Charge Pump 2 Control Circuit C2+ _ C2− C2 + VREF Shutdown/ Start-Up Control + − OUT _ _ + LBI + + − 0.
PAGE 4
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION C1+ 4 Positive terminal of the flying capacitor C1 C1− 3 Negative terminal of the flying capacitor C1 C2+ 6 Positive terminal of the flying capacitor C2 C2− 8 Negative terminal of the flying capacitor C2 Device-enable input. Three operating modes can be programmed with the EN pin.
PAGE 5
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 detailed description (continued) constant-frequency mode When the output current is higher then the LinSkip current threshold, the charge pump runs continuously at the switching frequency f(OSC). The control circuit, fed from the error amplifier, controls the charge on C1 and C2 by controlling the gates and hence the rDS(ON) of the integrated MOSFETs.
PAGE 6
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 detailed description (continued) low-battery detector (TPS60204) The low-battery comparator trips at 1.18 V ±4% when the voltage on pin LBI ramps down. The voltage V(TRIP) at which the low-battery warning is issued can be adjusted with a resistive divider as shown in Figure 2. The sum of resistors R1 and R2 is recommended to be in the 100-kΩ to 1-MΩ range.
PAGE 7
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 detailed description (continued) Table 1. Recommended Values for the Resistive Divider From the E96 Series (±1%) VIN/V 1.6 R1/kΩ R2/kΩ 750 VTRIP(MIN)/V 1.524 VTRIP(MAX)/V 1.677 267 1.7 301 1.8 340 681 1.620 1.785 649 1.710 1.887 1.9 2.0 374 619 1.799 1.988 402 576 1.903 2.
PAGE 8
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 electrical characteristics at Ci = 2.2 µF, C1 = C2 = 1 µF, CO = 2.2 µF, TA = −40°C to 85°C, VI = 2.4 V, EN = VI (unless otherwise noted) IO(MAX) PARAMETER TEST CONDITIONS MIN Maximum continuous output current VI = 2 V 1.6 V < VI < 1.8 V, 0 < IO < 0.25 × IO(MAX) 100 1.8 V < VI < 2 V, 0 < IO < 0.5 × IO(MAX) 3.17 3.43 2 V < VI < 3.3 V, 0 < IO < IO(MAX) 3.17 3.43 3.
PAGE 9
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 TYPICAL CHARACTERISTICS Table of Graphs FIGURES η Efficiency IQ Quiescent supply current VO Output voltage VO Output voltage ripple vs Output current (TPS60204, TPS60205) 3 vs Input voltage 4 vs Input voltage 5 vs Output current 6 vs Input voltage 7 vs Time 8, 9, 10 Start-up timing 11 Load transient response 12, 13 IO Peak output current vs Input voltage
PAGE 10
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 TYPICAL CHARACTERISTICS QUIESCENT SUPPLY CURRENT vs INPUT VOLTAGE OUTPUT VOLTAGE vs OUTPUT CURRENT 40 IO = 0 mA 3.4 36 VI = 3.6 V 34 VO − Output Voltage − V I (Q) − Quiescent Supply Current − µ A 38 3.5 32 30 28 26 24 3.3 3.2 VI = 1.8 V VI = 2.7 V 3.1 VI = 2.4 V 3.0 22 20 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 2.
PAGE 11
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE RIPPLE vs TIME OUTPUT VOLTAGE RIPPLE vs TIME 3.38 3.38 VI = 2.4 V IO = 10 mA VI = 2.4 V IO = 100 mA 3.36 VO − Output Voltage Ripple − V VO − Output Voltage Ripple − V 3.36 3.34 3.32 3.30 3.28 3.26 3.34 3.32 3.30 3.28 3.26 3.24 3.24 3.22 3.
PAGE 12
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 TYPICAL CHARACTERISTICS PEAK OUTPUT CURRENT vs INPUT VOLTAGE 350 IO = 50 mA 300 I O − Peak Output Current − mA VO − Output Voltage − V LINE TRANSIENT RESPONSE 3.32 3.30 VI − Input Voltage − V 3.28 3.26 2.8 V 250 200 150 100 50 2.2 V 0 1 2 3 4 5 6 7 8 9 10 0 1.6 t − Time − ms Figure 13 12 2.0 2.4 2.8 3.
PAGE 13
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 APPLICATION INFORMATION capacitor selection The TPS6020x devices require only four external capacitors to achieve a very low output voltage ripple. The capacitor values are closely linked to the required output current. Low ESR (<0.1 Ω) capacitors should be used at input and output.
PAGE 14
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 APPLICATION INFORMATION Table 4. Recommended Capacitor Manufacturers MANUFACTURER CAPACITOR TYPE INTERNET SITE Taiyo Yuden X7R/X5R ceramic http://www.t−yuden.com/ AVX X7R/X5R ceramic http://www.avxcorp.com/ INPUT 1.6 V to 3.6 V Ci 2.2 µF 7 R1 1 R3 LBI LBO R2 4 C1 1 µF OUTPUT 3.3 V, 100 mA TPS60204 5 IN OUT C1+ C2+ 3 C1− 9 EN C2− Co 2.
PAGE 15
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 APPLICATION INFORMATION power dissipation The power dissipated in the TPS6020x devices depends mainly on input voltage and output current and is approximated by: P (DISS) + I O ǒ Ǔ x 2xV * V I O for I (Q) t I O (5) By observing equation 5, it can be seen that the power dissipation is worst for highest input voltage VI and highest output current IO.
PAGE 16
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 APPLICATION INFORMATION Figure 17. Recommended Component Placement and Board Layout Table 5.
PAGE 17
SLVS354A − FEBRUARY 2001 − REVISED SEPTEMBER 2001 MECHANICAL DATA DGS (S-PDSO-G10) PLASTIC SMALL-OUTLINE PACKAGE 0,27 0,17 0,50 10 0,08 M 6 0,15 NOM 3,05 2,95 4,98 4,78 Gage Plane 0,25 1 0°−ā 6° 5 3,05 2,95 0,69 0,41 Seating Plane 1,07 MAX 0,15 0,05 0,10 4073272/B 08/01 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice.
PAGE 18
PACKAGE OPTION ADDENDUM www.ti.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 29-Jul-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS60204DGSR MSOP DGS 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS60205DGSR MSOP DGS 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
PAGE 20
PACKAGE MATERIALS INFORMATION www.ti.com 29-Jul-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS60204DGSR MSOP DGS 10 2500 340.5 338.1 20.6 TPS60205DGSR MSOP DGS 10 2500 340.5 338.1 20.
PAGE 21
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.