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10

TC7660S

SUPER CHARGE PUMP DC-TO-DC

VOLTAGE CONVERTER

TC7660S-14  9/16/96

© 2001 Microchip Technology Inc.     DS21467A

.050 (1.27) TYP.

8

°

 MAX.

.244 (6.20)
.228 (5.79)

.157 (3.99)
.150 (3.81)

.197 (5.00)
.189 (4.80)

.020 (0.51)
.013 (0.33)

.010 (0.25)
.004 (0.10)

.069 (1.75)
.053 (1.35)

.010 (0.25)
.007 (0.18)

.050 (1.27)
.016 (0.40)

8-Pin Plastic SOIC

PACKAGE DIMENSIONS (CONT.)

8-Pin CerDIP

Dimensions:  inches (mm)

.400 (10.16)

.370 (9.40)

.300 (7.62)
.230 (5.84)

.065 (1.65)
.045 (1.14)

.055 (1.40) MAX.

.020 (0.51) MIN.

PIN 1

.200 (5.08)
.160 (4.06)

.200 (5.08)
.125 (3.18)

.110 (2.79)
.090 (2.29)

.020 (0.51)
.016 (0.41)

.040 (1.02)
.020 (0.51)

.320 (8.13)
.290 (7.37)

.150 (3.81) 

MIN.

3

°

 MIN.

.015 (0.38)
.008 (0.20)

.400 (10.16)

.320 (8.13)

Summary of Contents for TC7660S Series

Page 1: ...citors Theon boardoscillatoroperatesatanominalfrequency of 10kHz Frequency is increased to 45kHz when pin 1 is connected to V Operation below 10kHz for lower supply current applications is possible by...

Page 2: ...nnecting 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 t...

Page 3: ...arge value for C1 in order to achieve maximum efficiency of operation 1 2 3 4 8 7 6 5 TC7660S V 5V VO C1 10 F COSC C2 10 F IL RL IS V NOTE For large values of COSC 1000pF the values of C1 and C2 shoul...

Page 4: ...F Figure 4 Paralleling Devices Lowers Output Impedance Dos and Don ts Do not exceed maximum supply voltages Do not connect the LV terminal to GND for supply voltages greater than 3 5V Do not short cir...

Page 5: ...a voltage level of V VF where V is the supply voltage and VF is the forward voltage drop of diode D1 On the transfer cycle the voltage on C1 plus the supply voltage V is applied through diode D2 to c...

Page 6: ...nitial inefficient pump as shown in Figure 9 could be used to start this circuit up after which it Figure 7 Lowering Oscillator Frequency 1 2 3 4 8 7 6 5 V VOUT C1 COSC C2 TC7660S will bypass the othe...

Page 7: ...eq vs Temperature 12 10 0 2 4 6 8 40 20 0 20 40 100 60 80 OSCILLATOR FREQUENCY kHz TEMPERATURE C VIN 12V VIN 5V Unloaded Osc Freq vs Temperature with Boost Pin VIN 60 50 0 10 20 30 40 40 20 0 20 40 10...

Page 8: ...V Output Source Resistance vs Temperature 100 0 20 40 60 80 40 20 0 20 40 100 60 80 OUTPUT SOURCE RESISTANCE TEMPERATURE C VIN 2 5V VIN 5 5V Power Conversion Efficiency vs Load POWER EFFICIENCY LOAD C...

Page 9: ...75 100 75 50 25 0 SUPPLY CURRENT I DD A TEMPERATURE C 40 20 0 20 40 100 60 80 VIN 12 5V VIN 5 5V PACKAGE DIMENSIONS 3 MIN PIN 1 260 6 60 240 6 10 045 1 14 030 0 76 070 1 78 040 1 02 400 10 16 348 8 84...

Page 10: ...33 010 0 25 004 0 10 069 1 75 053 1 35 010 0 25 007 0 18 050 1 27 016 0 40 8 Pin Plastic SOIC PACKAGE DIMENSIONS CONT 8 Pin CerDIP Dimensions inches mm 400 10 16 370 9 40 300 7 62 230 5 84 065 1 65 04...

Page 11: ...Tel 650 968 9241 Fax 650 967 1590 New York 150 Motor Parkway Suite 202 Hauppauge NY 11788 Tel 631 273 5305 Fax 631 273 5335 San Jose Microchip Technology Inc 2107 North First Street Suite 590 San Jose...

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