TS2937CZ33C0 datasheet, PDF - EEWORLD Datasheet

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TS2937CZ33C0: DescriptionFIXED POSITIVE LDO REGULATOR; CategoryPower/power management The power supply circuit; File Size297KB，10 Pages; ManufacturerTaiwan Semiconductor; Websitehttp://www.taiwansemi.com/

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TS2937CZ33C0 Overview

FIXED POSITIVE LDO REGULATOR

TS2937CZ33C0 Parametric

Parameter Name	Attribute value
Maker	Taiwan Semiconductor
Objectid	1324363072
package instruction	,
Reach Compliance Code	compli
ECCN code	EAR99
compound_id	232738050
Maximum drop-back voltage 1	0.7 V
Maximum input voltage	26 V
Minimum input voltage	4.3 V
JESD-30 code	R-PSFM-T3
Number of functions	1
Number of terminals	3
Working temperatureTJ-Max	125 °C
Operating temperatureTJ-Mi	-40 °C
Maximum output current 1	0.5 A
Maximum output voltage 1	3.399 V
Minimum output voltage 1	3.201 V
Nominal output voltage 1	3.3 V
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	FLANGE MOUNT
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	NO
Terminal form	THROUGH-HOLE
Terminal location	SINGLE

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TS2937

500mA Ultra Low Dropout Voltage Regulator

TO-220

TO-263

(D PAK)

TO-252

(DPAK)

SOT-223

Pin Definition:

1. Input

2. Ground

3. Output

General Description

TS2937 of fixed-voltage monolithic micro-power voltage regulators is designed for a wide range of applications.

This device excellent choice of use in battery-power application. Furthermore, the quiescent current increases on

slightly at dropout, which prolongs battery life. This series of fixed-voltage regulators features very low ground

current (200uA Typ.) and very low drop output voltage (Typ. 60mV at light load and 600mV at 500mA). This

includes a tight initial tolerance of 2%, extremely good line regulation of 0.05% typ., and very low output

temperature coefficient.

Features

●

Dropout voltage typically 0.6V @ Io=500mA

Output voltage trimmed before assembly

-18V Reverse peak voltage

+30V Input over voltage protection

+60V Transient peak voltage

Internal current limit

Thermal shutdown protection

Ordering Information

Part No.

Package

Packing

TS2937CZxx C0

TO-220

50pcs / Tube

TS2937CMxx RN

TO-263

800pcs / 13” Reel

TS2937CPxx RO

TO-252

2.5Kpcs / 13” Reel

TS2937CWxx RP

SOT-223

2.5Kpcs / 13” Reel

Note: Where xx denotes voltage option, available are

12=

12V

50=

33=

3.3V

Contact factory for additional voltage options.

Block Diagram

Absolute Maximum Rating

Parameter

Input Supply Voltage

Operation Input Supply Voltage

Power Dissipation

Operating Junction Temperature Range

Storage Temperature Range

Symbol

OPR

STG

Limit

-18 ~ +60

Internally Limited

-40 ~ +125

-65 ~ +150

Unit

1/10

Version: D13

TS2937

500mA Ultra Low Dropout Voltage Regulator

Application Information

The TS2937 series is a high performance with low dropout voltage regulator suitable for moderate to high current

and voltage regulator application. Its 600mV(typ) dropout voltage at full load and over temperature makes it

especially valuable in battery power systems and as high efficiency noise filters in post regulator applications.

Unlike normal NPN transistor design, where the base to emitter voltage drop and collector to emitter saturation

voltage limit the minimum dropout voltage, dropout performance of the PNP output of these devices is limited only

by low Vce saturation voltage.

The TS2937 series is fully protected from damage due to fault conditions. Linear current limiting is provided. Output

current during overload conditions is constant. Thermal shutdown the device when the die temperature exceeds

the maximum safe operating temperature. Transient protection allows device survival even when the input voltage

spikes above and below nominal. The output structure of these regulators allows voltages in excess of the desired

output voltage to be applied without reverse current flow.

Typical Application Circuit

Output Capacitor

The TS2937 series requires an output capacitor to maintain stability and improve transient response. Proper

capacitor selection is important to ensure proper operation. The output capacitor selection is dependent upon the

ESR of the output capacitor the maintain stability. When the output capacitor is 10uF or greater, the output

capacitor should have an ESR less than 2 ohm. This will improve transient response as well as promoted stability.

Ultra low ESR capacitors (<100mohm), such as ceramic chip capacitors may promote instability. These very low

ESR levels may cause an oscillation and/or under damped transient response. A low ESR solid tantalum capacitor

works extremely well and provides good transient response and stability over temperature. Aluminum electrolytic

can also be used, as long as the ESR of the capacitor is <2ohm. The value of the output capacitor can be

increased without limit. Higher capacitance values help to improved transient response and ripple rejection and

reduce output noise.

Minimum Load Current

The TS2937 series is specified between finite loads. If the output current is too small leakage currents dominate

and the output voltage rises. A 1mA minimum load current is necessary for proper regulation.

Input Capacitor

An input capacitor of 1uF or greater is recommended when the device is more that 4 inches away from the bulk AC

supply capacitance or when the supply is a battery. Small and surface mount ceramic chip capacitors can be used

for bypassing. Larger values will help to improve ripple rejection by bypassing the input to the regulator, further

improving the integrity of the output voltage.

3/10

Version: D13

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