TK11250CM Toko America, TK11250CM Datasheet

TK11250CM

Manufacturer Part Number

TK11250CM

Description

(TK112xxCM) Voltage Regulator

Manufacturer

Toko America

Datasheet

1.TK11250CM.pdf (22 pages)

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FEATURES

DESCRIPTION

The TK112xxC is a low dropout linear regulator with a built-

in electronic switch. The internal switch can be controlled

by TTL or CMOS logic levels. The device is in the “on” state

when the control pin is pulled to a logic high level. An

external capacitor can be connected to the noise bypass pin

to lower the output noise level to 30 µVrms.

An internal PNP pass transistor is used to achieve a low

dropout voltage of 170 mV (typ.) at 200 mA load current. The

TK112xxC has a very low quiescent current of 65 µA at no

load and 1.8 mA with a 100 mA load.The internal thermal

shut down circuitry limits the junction temperature to150 °C.

The load current is internally monitored and the device will

shut down in the presence of a short circuit or overcurrent

condition at the output.

January 2002 TOKO, Inc.

VOLTAGE CODE:

Refer toTable 1

Package Code

High Precision Voltage at ± 1.5% or ± 50 mV

Active High On/Off Control

Very Low Dropout Voltage: (V

Very Good Stability: CL = 0.1 mF is Stable for any

Type Capacitor with V

Excellent Ripple Rejection Ratio (80 dB @ 1 kHz)

Very Low Quiescent Current (I

Peak Output Current is 480 mA

SOT23L-6 Surface Mount Package

Very Low Noise

Built-in Reverse Bias Protection

Internal Thermal Shutdown

Short Circuit Protection

Voltage Code

ORDERING INFORMATION

TK112

PACKAGE CODE:

M: SOT23L-6

OUT

³ 1.8 V (I

DROP

= 65 mA at I

= 105 mV at 100 mA)

OUT

TAPE/REEL CODE:

L: Tape Left

Reel Size = 1300 pcs.

TEMP. CODE:

C: -30 to +80°C

I: -40 to +85°C

Tape/Reel Code

Temp. Code

> 0.5 mA)

OUT

VOLTAGE REGULATOR WITH ON/OFF SWITCH

= 0 mA)

APPLICATIONS

The TK112xxCM circuit features very high stability in both

DC and AC. An output capacitor of 0.1 mF provides stable

operation for V

used; however, the larger this capacitor is, the better the

overall characteristics are. The ripple rejection ratio is 84 dB

at 400 Hz, and 80 dB at 1 kHz.

The TK112xxC is available in the SOT23L-6 surface mount

package.

CONTROL

Battery Powered Systems

Cellular Telephones

Pagers

Personal Communications Equipment

Portable Instrumentation

Portable Consumer Equipment

Radio Control Systems

Toys

Low Voltage Systems

V IN

CONTROL CIRCUIT

OUT

³ 2.5 V. Any type of capacitor can be

BLOCK DIAGRAM

GND

REFERENCE

BANDGAP

NOISE BYPASS

TK112xxC

CONSTANT

CURRENT

SOURCE

CONTROL

GND

BYPASS

NOISE

PROTECTION

THERMAL

TK112xxCM

V IN

GND

V OUT

Page 1

V OUT

Related parts for TK11250CM

TK11250CM Summary of contents

Page 1

FEATURES n High Precision Voltage at ± 1.5% or ± Active High On/Off Control n Very Low Dropout Voltage Very Good Stability 0 Stable for any ³ 1 Type ...

TK112xxCM ABSOLUTE MAXIMUM RATINGS TK112xxCM - C RANK Supply Voltage ......................................................... 16 V Power Dissipation SOT-23L (Note1) ................... 600 mW Reverse Bias ............................................................. 6 V Storage Temperature Range ..................... -55 to +150 °C TK112xxCM ELECTRICAL CHARACTERISTICS - C RANK Test ...

Page 3

TK112xxCM ELECTRICAL CHARACTERISTICS - C RANK (CONT) Test conditions ° ...

Page 4

TK112xxCM ABSOLUTE MAXIMUM RATINGS TK112xxCM - I RANK Supply Voltage ......................................................... 16 V Power Dissipation SOT-23L (Note1) ................... 600 mW Reverse Bias ............................................................. 6 V Storage Temperature Range ..................... -55 to +150 °C TK112xxCM ELECTRICAL CHARACTERISTICS - I RANK Test ...

Page 5

TK112xxCM ELECTRICAL CHARACTERISTICS - I RANK (CONT) Test conditions ° the full operating temperature range. (-40~85°C ...

Page 6

TK112xxCM TK112xxCM ELECTRICAL CHARACTERISTICS TABLE 1 Test conditions OUT(TYP ...

Page 7

TK112xxCM ELECTRICAL CHARACTERISTICS TABLE 1 (CONT) Test conditions OUT(TYP ...

Page 8

TK112xxCM CONT TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT NOISE TK11230 CN vs. NOISE I TK11230C C N vs. NOISE 300 CL = MLCC 250 200 150 100 CL = TANTALUM 50 I OUT = 30 mA BPF:400 ~ 80 ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) RIPPLE REJECTION 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 0.1 1 FREQUENCY (kHz) 0 -10 -20 -30 - (MLCC) -50 -60 - (TANTALUM) -80 ...

Page 10

TK112xxCM TYPICAL PERFORMANCE CHARACTERISTICS (CONT OFF TRANSIENT CL = VARIABLE 0.001 F V CONT ON OFF OUT VARIABLE C ...

Page 11

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) * LOAD TRANSIENT CL = VARIABLE 0. STEP I OUT OUT OUT = mA, I ...

Page 12

TK112xxCM TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) LINE REGULATION -10 -15 -20 -25 -30 - (V) REGULATION POINT 100 I OUT = 0 mA, 50 mA, 100 mA, 150 mA, 200 mA, ...

Page 13

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) SHORT CIRCUIT CURRENT 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 100 200 300 I OUT (mA) GROUND PIN CURRENT vs. OUTPUT CURRENT ...

Page 14

TK112xxCM TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) TEMPERATURE CHARACTERISTICS MAXIMUM OUTPUT CURRENT vs. TEMPERATURE 500 480 460 440 420 V OUT = (V OUT 400 380 360 340 -50 - Ta(°C) CONTROL CURRENT vs. TEMPERATURE 20.0 18.0 16.0 V CONT ...

Page 15

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) OUTPUT VOLTAGE vs. TEMPERATURE CHARACTERISTICS V OUT = 1 -10 -15 -20 -25 -30 -35 -50 - (°C) V OUT = 3 ...

Page 16

TK112xxCM DEFINITION AND EXPLANATION OF TECHNICAL TERMS OUTPUT VOLTAGE (V ) OUT The output voltage is specified with mA. OUT MAXIMUM OUTPUT CURRENT (I The rated output current is specified under the condition where the output ...

Page 17

DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT TK112xxC GND PACKAGE POWER DISSIPATION (P This is the power dissipation level at which the thermal sensor is activated. The IC contains an internal thermal sensor which monitors the junction temperature. ...

Page 18

TK112xxCM APPLICATION INFORMATION (CONT.) BOARD LAYOUT Page 18 SOT23L-6 BOARD LAYOUT OFF Power dissipation is 600 mW when mounted as recommended. Decrease at the rate of 4.8 mW/°C for operation above 25 °C. DERATING CURVE 600 ...

Page 19

Application Hint On / Off Control It is recommended to turn the regulator Off when the circuit following the regulator is not operating. A design with little electric power loss can be implemented. We recommend the use of the on ...

Page 20

TK112xxCM INPUT-OUTPUT CAPACITORS Linear regulators require input and output capacitors in order to maintain the regulator’s loop stability. The equivalent series resistance (ESR) of the output capacitor must be in the stable operation area. However recommended to use ...

Page 21

APPLICATION INFORMATION (CONT) Generally, a ceramic capacitor has both a temperature characteristic and voltage characteristic. Please consider both characteristics when selecting the part. The B curves are the recommended characteristics. CAPACITANCE vs. VOLTAGE 100 CURVE 60 ...

Page 22

... Dimensions are shown in millim eters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) Note: Pin 2 and Pin 5 should be grounded for heat dissipation TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Semiconductor Technical Support Toko America, Inc. Toko Design Center 1250 Feehanville Drive 4755 Forge Road ...

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