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LT1054CJ8 Datasheet

  • LT1054CJ8

  • Switched-Capacitor Voltage Converter with Regulator

  • 16頁

  • LINER

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LT1054/LT1054L
Switched-Capacitor Voltage
Converter with Regulator
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Available in Space Saving SO-8 Package
Output Current: 100mA (LT1054)
125mA (LT1054L)
Low Loss: 1.1V at 100mA
Operating Range:3.5V to 15V (LT1054)
3.5V to 7V (LT1054L)
Reference and Error Amplifier for Regulation
External Shutdown
External Oscillator Synchronization
Can Be Paralleled
Pin Compatible with the LTC
廬
1044/LTC7660
The LT
廬
1054 is a monolithic, bipolar, switched-capacitor
voltage converter and regulator. The LT1054 provides
higher output current than previously available converters
with significantly lower voltage losses. An adaptive switch
driver scheme optimizes efficiency over a wide range of
output currents. Total voltage loss at 100mA output current
is typically 1.1V. This holds true over the full supply voltage
range of 3.5V to 15V. Quiescent current is typically 2.5mA.
The LT1054 also provides regulation, a feature not previ-
ously available in switched-capacitor voltage converters.
By adding an external resistive divider a regulated output
can be obtained. This output will be regulated against
changes in both input voltage and output current. The
LT1054 can also be shut down by grounding the feedback
pin. Supply current in shutdown is less than 100碌A(chǔ).
The internal oscillator of the LT1054 runs at a nominal
frequency of 25kHz. The oscillator pin can be used to adjust
the switching frequency or to externally synchronize the
LT1054.
The LT1054 is pin compatible with previous converters
such the LTC1044/LTC7660.
APPLICATI
s
s
s
s
S
Voltage Inverter
Voltage Regulator
Negative Voltage Doubler
Positive Voltage Doubler
, LTC and LT are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRAM
V
REF
6
2.5V
R
V
IN
8
2
REFERENCE
DRIVE
VOLTAGE LOSS (V)
+
1
FEEDBACK/
SHUTDOWN
CAP
+
2
+
鈥?/div>
OSC
R
7
OSC
Q
Q
CAP
鈥?/div>
4
DRIVE
DRIVE
3 GND
*EXTERNAL CAPACITORS
C
IN
*
1
+
C
OUT
*
5 鈥揤
OUT
DRIVE
LT1054 鈥?BD
0
U
LT1054/LT1054L Voltage Loss
3.5V
鈮?/div>
V
IN
鈮?/div>
15V (LT1054)
3.5V
鈮?/div>
V
IN
鈮?/div>
7V (LT1054L)
C
IN
= C
OUT
= 100碌F
INDICATES GUARANTEED
TEST POINT
LT1054
LT1054L
T
J
= 125擄C
T
J
= 25擄C
T
J
= 鈥?5擄C
0
25
50
75
100
OUTPUT CURRENT (mA)
125
1054 TA01鈥?/div>
W
UO
1

LT1054CJ8 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 停產(chǎn)

  • *

  • 管件

  • 停產(chǎn)

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • -

  • 通孔

  • 8-CDIP（0.300"，7.62mm）

  • 8-CERDIP

LT1054CJ8相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
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