TCM850EOA Microchip Technology Inc., TCM850EOA Datasheet

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TCM850EOA

Manufacturer Part Number
TCM850EOA
Description
Manufacturer
Microchip Technology Inc.
Datasheet

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Part Number
Manufacturer
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Price
Part Number:
TCM850EOA
Manufacturer:
TC/德昌
Quantity:
20 000
FEATURES
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
© 2001 Microchip Technology Inc.
5V TO 10V VOLTAGE CONVERTER +B122+B124 REGULATED GaAs
FET BIAS SUPPLY
SHDN (TCM851)
OSC (TCM852)
SHDN (TCM850)
Fixed – 4.1V or Adjustable – 0.5V to – 9V Output
at 5mA
4.5V to 10V Input Voltage Range
Low Output Voltage Ripple
100kHz Charge Pump Switching Frequency
Optional External Synchronizing Clock
Input (TCM852)
Logic Level Shutdown Mode ................ 0.5 A Typ.
Temperature (TCM850/852/853)
Low Cost, 8-Pin SOIC Package
Cellular Phones
Negative Regulated Power Supplies
LCD Bias Contrast Control
Adjustable GaAs SET Bias
Wireless Data Loggers
NEGOUT
TCM850-852 .............................................. 2mVp-p
TCM853 ...................................................... 1mVp-p
C
2
C
1
C
C
1
1
+
– 1.28V
CHARGE
DS21489A
REF
PUMP
N
TCM850
TCM851
TCM852
GND
FB
(GND to SET
V
OUT
C
3
= – 4.1V)
C
IN
4
OUT
Figure 1.
NEGOUT
SHDN
GENERAL DESCRIPTION
and a low noise linear regulator in a single small outline
package. They are ideal for biasing GaAS FETs in cellular
telephone transmitter power amplifiers
4.5V to 10.0V and have – 5mA output current capability. The
TCM850/1/2 have both preset (– 4.1V) and variable (– 0.5V
to –9.0V) output voltages that program with an external
resistor divider. The TCM853 output voltage programs with
an external positive control voltage. The TCM850/1/3 can
be shutdown reducing quiescent current to less than
0.5 A (typ) over temperature, 2 A (typ) for the TCM851.
ORDERING INFORMATION
Part No.
TCM850COA
TCM850EOA
TCM851COA
TCM851EOA
TCM852COA
TCM852EOA
TCM853COA
TCM853EOA
TCM850EV
C
The TCM850/1/2/3 combines an inverting charge pump
All four devices accept a range of input voltages from
2
C
1
C
C
1
1
+
CHARGE
PUMP
EVALUATION
AVAILABLE
N
KIT
Package
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
Evaluation Kit for TCM850/1/2/3
TCM853
GND
CONT
(CONTROL VOLTAGE)
C
– 40 C to +85 C
– 40 C to +85 C
– 40 C to +85 C
– 40 C to +85 C
3
C
4
IN
TCM850
TCM851
TCM852
TCM853
Temp. Range
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
OUT
TC850/1/2/3-3 10/1/96

Related parts for TCM850EOA

TCM850EOA Summary of contents

Page 1

... The TCM853 output voltage programs with an external positive control voltage. The TCM850/1/3 can be shutdown reducing quiescent current to less than 0.5 A (typ) over temperature (typ) for the TCM851. ORDERING INFORMATION Part No. TCM850COA TCM850EOA TCM851COA TCM851EOA TCM852COA TCM852EOA TCM853COA TCM853EOA TCM850EV ...

Page 2

... Microchip Technology Inc. DS21489A ...

Page 3

... TO 10V VOLTAGE CONVERTER +B122+B124 REGULATED GaAs FET BIAS SUPPLY PIN CONFIGURATIONS – C1 – GND TCM850COA NEGOUT 3 6 NEGOUT OUT TCM850EOA SHDN FB SHDN 4 5 PIN DESCRIPTION Pin No Pin No Pin No (TCM850) (TCM851) (TCM852 — — — 4 — — — — — — ...

Page 4

... FET BIAS SUPPLY OUT + OUT OUT – TCM850 TCM851 TCM852 NEGOUT R2 = 100k SHDN FB SHDN OSC R1 = 100k GND (–1.28 OUT + 1 OUT V = – 0.5V to – 9.0V OUT – TCM853 R2 = 100k CONT R1 = 100k GND V CTRL (0 to 10V) © 2001 Microchip Technology Inc. = –2.56V DS21489A ...

Page 5

... Evaluation Kit Microchip Technology Inc. offers evaluation kit (TCM850EV) for the TCM850-853. A second evaluation kit (TC7660EV) evaluates several Microchip charge pumps including the TC7660, TC7660S, TC7662B, TC962, TC682. ...

Page 6

... REGULATED GaAs FET BIAS SUPPLY Output Voltage vs. Input Voltage Over Temperature I = 3mA OUT T = – INPUT VOLTAGE (V) No-Load Supply Current vs. Input Voltage INPUT VOLTAGE (V) Efficiency vs. Load Current LOAD CURRENT (mA) © 2001 Microchip Technology Inc 10V DS21489A ...

Page 7

... INPUT VOLTAGE (V) PACKAGE DIMENSIONS .050 (1.27) TYP. .197 (5.00) .189 (4.80) .020 (0.51) .013 (0.33) © 2001 Microchip Technology Inc. DS21489A I = 5mA OUT 8-Pin SOIC .157 (3.99) .244 (6.20) .150 (3.81) .228 (5.79) .069 (1.75) .053 (1.35) 8 MAX ...

Page 8

... Microchip. No licenses are conveyed, implicitly or otherwise, except as maybe explicitly expressed herein, under any intellec- tual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respective companies. ...

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