TC1121CUA713 Microchip Technology, TC1121CUA713 Datasheet

IC CHARGE PUMP CONV 100MA 8-MSOP

TC1121CUA713

Manufacturer Part Number
TC1121CUA713
Description
IC CHARGE PUMP CONV 100MA 8-MSOP
Manufacturer
Microchip Technology
Type
Switched Capacitor (Charge Pump), Invertingr
Datasheets

Specifications of TC1121CUA713

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
-2.4 ~ -5.5 V
Current - Output
100mA
Frequency - Switching
10kHz ~ 200kHz
Voltage - Input
2.4 ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Power - Output
333mW
Function
Inverting
Output Voltage
- 5.5 V to - 2.4 V
Output Current
100 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features:
• Optional High-Frequency Operation Allows Use of
• Low Operating Current (FC = GND):
• High Output Current (100 mA)
• Converts a 2.4V to 5.5V Input Voltage to a
• Uses Only 2 Capacitors; No Inductors Required
• Selectable Oscillator Frequency:
• Power-Saving Shutdown Input
• Available in 8-Pin MSOP, 8-Pin PDIP and 8-Pin
Applications:
• Laptop Computers
• Medical Instruments
• Disk Drives
• μP-Based Controllers
• Process Instrumentation
Device Selection Table
© 2006 Microchip Technology Inc.
TC1121COA
TC1121CPA
TC1121CUA
TC1121EOA
TC1121EPA
TC1121EUA
Small Capacitors
- 50 μA
Corresponding Negative Output Voltage
(Inverter mode)
- 10 kHz to 200 kHz
Small Outline (SOIC) Packages
100mA Charge Pump Voltage Converter with Shutdown
Number
Part
8-Pin MSOP
8-Pin MSOP
8-Pin SOIC
8-Pin SOIC
8-Pin PDIP
8-Pin PDIP
Package
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Operating
Range
Temp.
Package Type
General Description:
The TC1121 is a charge pump converter with 100 mA
output current capability. It converts a 2.4V to 5.5V
input to a corresponding negative output voltage. As
with all charge pump converters, the TC1121 uses no
inductors saving cost, size and EMI.
An on-board oscillator operates at a typical frequency
of 10 kHz (at V
(FC) is connected to ground. The oscillator frequency
increases to 200 kHz when FC is connected to V
allowing the use of smaller capacitors. Operation at
sub-10 kHz frequencies results in lower quiescent
NScurrent and is accomplished with the addition of an
external capacitor from OSC (pin 7) to ground. The
TC1121 also can be driven from an external clock
NSconnected OSC. Typical supply current at 10 kHz is
50 μA, and falls to less than 1 μA when the shutdown
input is brought low, whether the internal or an external
clock is used. The TC1121 is available in 8-pin SOIC,
MSOP and PDIP packages.
CAP
CAP
CAP
CAP
GND
GND
FC
FC
+
+
+
= 5V) when the frequency control input
1
2
3
4
1
2
3
4
8-Pin MSOP
8-Pin SOIC
8-Pin PDIP
TC1121COA
TC1121EOA
TC1121CUA
TC1121CPA
TC1121EUA
TC1121EPA
TC1121
8
7
6
5
8
7
6
5
DS21358C-page 1
V +
OSC
SHDN
V
V +
OSC
SHDN
V
OUT
OUT
+
,

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TC1121CUA713 Summary of contents

Page 1

... PDIP TC1121CUA 8-Pin MSOP TC1121EOA 8-Pin SOIC TC1121EPA 8-Pin PDIP TC1121EUA 8-Pin MSOP © 2006 Microchip Technology Inc. Package Type CAP CAP CAP CAP General Description: The TC1121 is a charge pump converter with 100 mA output current capability. It converts a 2.4V to 5.5V input to a corresponding negative output voltage ...

Page 2

... TC1121 Functional Block Diagram SHDN OSC Control FC OSC V + GND DS21358C-page – CAP + CAP – TC1121 RC Switch Oscillator Matrix Logic Circuits V OUT C2 + © 2006 Microchip Technology Inc. ...

Page 3

... Note 1: Connecting any input terminal to voltages greater than V inputs from sources operating from external supplies be applied prior to “power up” of the TC1121. © 2006 Microchip Technology Inc. *Stresses above Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional ...

Page 4

... Output, negative voltage. 6 SHDN Shutdown. 7 OSC Oscillator control input. An external capacitor can be added to slow the oscillator. Take care to minimize stray capacitance. An external oscillator also may be connected to overdrive OSC Power-supply positive voltage input. DS21358C-page 4 Description = 10 kHz typ OSC © 2006 Microchip Technology Inc OSC ...

Page 5

... PUMP oscillator frequency), and C2 = 150 μF with an ESR of 0.2Ω, ripple is about 90 mV with a 100 mA load current raised to 390 μF, the ripple drops to 45 mV. © 2006 Microchip Technology Inc. 3.2 Changing Oscillator Frequency The TC1121’s clock frequency is controlled by four modes: ...

Page 6

... V – OUT CAP – “1” not used CAP OSC OSC TC1121 + C1n 3 GND SHDN SHDN – OUT CAP “n” not used OSC SHDN SHDN OUT OUT “n” C2n + OSC SHDN SHDN OUT C2 + © 2006 Microchip Technology Inc. ...

Page 7

... This particular configuration leads to higher source impedances of the generated supplies due to the finite impedance of the common charge-pump driver CAP + 3 C1 GND 4 CAP *SHDN should be tied to V FIGURE 3-4: Combined Positive Multiplier and Negative Converter © 2006 Microchip Technology Inc D1 1N4148 IN + OSC D1 TC1121 5 V OUT C2 ...

Page 8

... Standard Reel Component Orientation for 713 Suffix Device Carrier Width (W) Pitch (P) Part Per Full Reel User Direction of Feed P Standard Reel Component Orientation for 713 Suffix Device Pitch (P) Part Per Full Reel 2500 W Reel Size 2500 Reel Size 13 in © 2006 Microchip Technology Inc. ...

Page 9

... Microchip Technology Inc. Pin 1 .197 (5.00) .189 (4.80) .043 (1.10) 6° Max. Max. .006 (0.15) .028 (0.70) .016 (0.40) Pin 1 ...

Page 10

... Typ. .197 (5.00) .189 (4.80) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) DS21358C-page 10 Pin 1 .244 (6.20) .228 (5.79) .069 (1.75) .053 (1.35) ° 8 Max. .050 (1.27) .016 (0.40) Dimensions: inches (mm) .010 (0.25) .007 (0.18) © 2006 Microchip Technology Inc. ...

Page 11

... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2006 Microchip Technology Inc. CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...

Page 12

... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21358C-page 12 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21358C © 2006 Microchip Technology Inc. ...

Page 13

... PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 14

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2006 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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