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參數(shù)資料
| 型號： | TK65015 |
| 廠商： | TOKO Inc. |
| 英文描述： | STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| 中文描述： | 升壓電壓電壓監(jiān)控轉爐 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 116K |
| 代理商： | TK65015 |
2
February, 1996 TOKO, Inc.
2-2-96
Page 1
TK65015
VIN
VO
CONTROL
CIRCUIT
GND
RC OSC.
IND
RESET
V
REF
UVLO
1
3
4
6
2,5
BLOCK DIAGRAM
TK65015M
DESCRIPTION
The TK65015 Low Power Step-Up DC-DC converter is
designed for portable battery powered systems, capable of
operating from a single battery cell down to 0.9 V.
The output voltage is laser-trimmed to 3.0 V. An internal
detector monitors the output voltage and provides an
active-low microprocessor reset signal whenever the out-
put voltage falls below an internally preset limit. An internal
undervoltage lockout circuit is utilized to prevent the induc-
tor switch from remaining in the "ON" mode when the
battery voltage is too low to permit normal operation.
Special care has been taken to achieve high reliability
through the use of Oxide, Nitride passivation and an
additional polyimide coating. The TK65015 is available in a
very small plastic surface mount package. (SOT-23L)
Pulse burst modulation (PBM) is used to regulate the
voltage at the V
OUT
pin at the IC. PBM is the process in
which an oscillator signal is gated or not gated to the switch
drive each period. The decision is made just before the start
of each cycle and is based on comparing the output voltage
to an internally-generated bandgap reference. The deci-
sion is latched, so the duty ratio is not modulated within a
cycle. The average duty ratio is effectively modulated by
the "bursting" and skipping of pulses which can be seen at
the IND pin of the IC.
The TK65015 provides the power switch and the control
circuit for a boost converter. The converter takes a DC
input (typically a single battery cell) and boosts it up to 3
volts. This regulated 3 volt output is typically used to supply
power to a microprocessor-controlled system.
FEATURES
I
0.9 V Operation
I
Very Low Quiescent Current
I
Internal Bandgap Reference
I
High Efficiency
I
Low Output Ripple
I
Microprocessor Reset Output
I
Laser-Trimmed Output Voltage
I
Undervoltage Lockout
I
Regulation by Pulse Burst Modulation (PBM)
TK65015M
Tape/Reel Code
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
ORDERING INFORMATION
STEP-UP VOLTAGE CONVERTER
WITH VOLTAGE MONITOR
APPLICATIONS
I
Battery Powered Systems
I
Cellular Telephones
I
Pagers
I
Personal Communications Equipment
I
Portable Instrumentation
I
Portable Consumer Equipment
I
Radio Control Systems
1
3
6
4
2
5
VIN
IND
GND
GND
RESET
VO
M5
相關PDF資料 |
PDF描述 |
|---|---|
| TK65015M | STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65015MBX | STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65015MTL | STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65018MITL | CMOS SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR |
| TK65018 | CMOS SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TK65015M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65015MBX | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65015MTL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR |
| TK65018 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:CMOS SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR |
| TK65018M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:CMOS SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR |
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