TC1240 datasheet(2/9 Pages) TELCOM

部件名	TC1240

功能描述	Positive Doubling Charge Pump with Shutdown in SOT Package

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制造商	TELCOM [TelCom Semiconductor, Inc]

网页	http://www.telcom-semi.com

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TC1240

2

TC1240-1 7/7/00

Positive Doubling Charge Pump with

Shutdown in SOT Package

ABSOLUTE MAXIMUM RATINGS*

Input Voltage (VIN to GND) .......................... +4.5V, –0.3V

Output Voltage (OUT to GND) .............. +9.0V, VIN – 0.3V

Current at OUT Pin ................................................. 50 mA

Short-Circuit Duration –OUT to GND ................ Indefinite

Operating Temperature Range ...............–40

°C to +85°C

Power Dissipation (TA ≤ 70°C)

6-Pin SOT-23A ..........................................240 mW

Storage Temperature (Unbiased) ......... –65

°C to +150°C

Lead Temperature (Soldering, 10 sec) ................. +300

°C

*Static-sensitive device. Unused devices must be stored in conductive

material. Protect devices from static discharge and static fields. Stresses

above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. These are stress ratings only and functional

operation of the device at these or any other conditions above those

indicated in the operational sections of the specifications is not implied.

Exposure to Absolute Maximum Rating Conditions for extended periods

may affect device reliability.

ELECTRICAL CHARACTERISTICS: TA = –40 to +85 °C, VIN = +2.8V, C1 = C2 = 3.3µF , SHDN = GND,

unless otherwise noted. Typical values are at TA = +25°C.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

IDD

Supply Current

RLOAD = ∞

—

180

300

µA

ISHDN

Shutdown Supply Current

SHDN = VIN

—

0.1

1.0

µA

VMIN

Minimum Supply Voltage

RLOAD = 1.0KΩ

2.5

—

V

VMAX

Maximum Supply Voltage

RLOAD = 1.0KΩ

—

4.0

V

FOSC

Oscillator Frequency

TA = –40 °C to +85°C

—

160

—

kHz

FSW

Switching Frequency

TA = –40 °C to +85°C

40

80

125

kHz

VIH

Shutdown Input Logic High

VIN = VMIN to VMAX

1.4

—

V

VIL

Shutdown Input Logic Low

VIN = VMIN to VMAX

—

0.4

V

PEFF

Power Efficiency

RLOAD = 1.0KΩ

86

93

—

%

VEFF

Voltage Conversion

RLOAD = ∞

97.5

99.96

—

%

Efficiency

ROUT

Output Resistance

RLOAD = 1.0KΩ

—17

—

Ω

(Note 1)

TA = –40°C to +85°C—

—

30

NOTE: 1. Capacitor contribution is approximately 26% of the output impedance [ESR = 1 / pump frequency x capacitance)].

2. Switching frequency is one-half internal oscillator frequency.

PIN DESCRIPTION

Pin No.

(6-Pin SOT-23A)

Symbol

Description

1

VIN

Power Supply Input.

2

GND

Ground.

3

C –

Commutation Capacitor Negative Terminal.

4

SHDN

Shutdown Input (Active High).

5

OUT

Doubled Output Voltage.

6

C+

Commutation Capacitor Positive Terminal.

类似零件编号 - TC1240

制造商	部件名	数据表	功能描述
Microchip Technology	TC1240	858Kb / 11P	Positive Doubling Charge Pump with Shutdown in SOT Package 2001
	TC1240	290Kb / 16P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2003
	TC1240A	290Kb / 16P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2003
	TC1240A	253Kb / 18P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2001-2012 11/29/12
	TC1240AECH	290Kb / 16P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2003

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类似说明 - TC1240

制造商	部件名	数据表	功能描述
Microchip Technology	TC1240	858Kb / 11P	Positive Doubling Charge Pump with Shutdown in SOT Package 2001
	TC1240	253Kb / 18P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2001-2012 11/29/12
	TC1240A	290Kb / 16P	Positive Doubling Charge Pumps with Shutdown in a SOT-23 Package 2003
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