TC1240

© 2001 Microchip Technology Inc.

6

TC1240-1 7/7/00 DS21333A

Positive Doubling Charge Pump with

Shutdown in SOT Package

Figure 6 is a schematic of the TC1240 Demo Card, and

Figure 7 shows the assembly drawing and artwork for the

board. Table 3 lists the voltages that are monitored by the

test points and Table 4 lists the currents that can be

measured using the jumpers or the specific jumper function.

Figure 7. TC1240 Demo Card Assembly Drawing and Artwork

Table 3. TC1240 Demo Card Test Points

TEST POINT

VOLTAGE MEASUREMENT

TP1

DEMO CARD POWER SUPPLY

INPUT[+2.5V to +4.0V]

TP2

GROUND

TP3

GROUND

TP4

TC1240 OUTPUT (2 x VIN)

TP5

TC1240 SHDN INPUT

TP6

TC1240 VIN SUPPLY VOLTAGE

TP7

EXTERNAL SHDN INPUT

Table 4. TC1240 Demo Card Jumpers

JUMPER

CURRENT MEASUREMENT / JUMPER

FUNCTION

J1

TC1240 QUIESCENT CURRENT

J2

TC1240 LOAD CURRENT

J3

TC1240 SHDN INPUT CURRENT

J4

CONNECT EXTERNAL SHDN INPUT TO

VIN (i.e. SHDN ENABLE)