TC1044S Datasheet, PDF(2/8 Page) TelCom Semiconductor, Inc – CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

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TC1044S Datasheet, PDF (2/8 Pages) TelCom Semiconductor, Inc – CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

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CHARGE PUMP DC-TO-DC

VOLTAGE CONVERTER

TC1044S

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage ......................................................... +13V

LV, Boost and OSC Inputs

Voltage (Note 1) ......................... â 0.3V to (V++ 0.3V)

for V+ < 5.5V

(V+ â 5.5V) to (V++ 0.3V)

for V+ > 5.5V

Current Into LV (Note 1) ...................... 20ÂµA for V+ > 3.5V

Output Short Duration (VSUPPLY â¤ 5.5V) ......... Continuous

Lead Temperature (Soldering, 10 sec) ................. +300Â°C

Package Power Dissipation (TA â¤ 70Â°C) (Note 2)

8-Pin CerDIP ..................................................800mW

8-Pin Plastic DIP ............................................. 730mW

8-Pin SOIC .....................................................470mW

Operating Temperature Range

C Suffix .................................................. 0Â°C to +70Â°C

I Suffix ............................................... â 25Â°C to +85Â°C

E Suffix ............................................. â 40Â°C to +85Â°C

M Suffix ........................................... â 55Â°C to +125Â°C

Storage Temperature Range ................ â 65Â°C to +150Â°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 permanent 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 operation sections of the specifications is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS: TA = +25Â°C, V+ = 5V, COSC = 0, Test Circuit (Figure 1), unless otherwise

indicated.

Symbol Parameter

Test Conditions

Min Typ Max Unit

I+

Supply Current

RL = â

0Â°C < TA < +70Â°C

â 40Â°C < TA < +85Â°C

â 55Â°C < TA < +125Â°C

I+

Supply Current

(Boost Pin = V+)

0Â°C < TA < +70Â°C

â 40Â°C < TA < +85Â°C

â 55Â°C < TA < +125Â°C

VH+ 2

Supply Voltage Range, High

Min â¤ TA â¤ Max,

RL = 10 kâ¦, LV Open

VL+2

Supply Voltage Range, Low

Min â¤ TA â¤ Max,

RL = 10 kâ¦, LV to GND

160 ÂµA

180

200

300 ÂµA

350

400

12 V

1.5

3.5 V

ROUT

Output Source Resistance

IOUT = 20mA

IOUT = 20mA, 0Â°C â¤ TA â¤ +70Â°C

IOUT = 20mA, â40Â°C â¤ TA â¤ +85Â°C

IOUT = 20mA, â55Â°C â¤ TA â¤ +125Â°C

V+ = 2V, IOUT = 3 mA, LV to GND

0Â°C â¤ TA â¤ +70Â°C

â 55Â°C â¤ TA â¤ +125Â°C

100 â¦

120

105 150

250 â¦

400

FOSC

Oscillator Frequency

Pin 7 open; Pin 1 open or GND

Boost Pin = V+

â kHz

PEFF

Power Efficiency

RL = 5 kâ¦; Boost Pin Open

TMIN < TA < TMAX; Boost Pin Open

Boost Pin = V+

â%

VOUT EFF

ZOSC

Voltage Conversion Efficiency

Oscillator Impedance

RL = â

V+ = 2V

V+ = 5V

99 99.9 â %

â Mâ¦

100

kâ¦

NOTES: 1. Connecting any input terminal to voltages greater than V+ or less than GND may cause destructive latch-up. It is recommended that no

inputs from sources operating from external supplies be applied prior to "power up" of the TC1044S.

2. Derate linearly above 50Â°C by 5.5mW/Â°C.

4-44

TELCOM SEMICONDUCTOR, INC.

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