参数资料
| 型号： | LT1054MJ8 |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHD CAP DBL INV 8-DIP |
| 标准包装： | 50 |
| 类型： | 切换式电容器（充电泵），倍增器，反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调 |
| 输入电压： | 3.5 V ~ 15 V |
| 频率 - 开关： | 25kHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 供应商设备封装： | 8-CERDIP |
LT1054/LT1054L
Switched-Capacitor Voltage
Converter with Regulator
Output Current: 100mA (LT1054)
Reference and Error Amplifier for Regulation
Low Loss: 1.1V at 100mA
Operating Range:3.5V to 15V (LT1054)
External Shutdown
External Oscillator Synchronization
Can Be Paralleled
Pin Compatible with the LTC ? 1044/ICL7660
Available in SW16 and SO-8 Packages
Voltage Inverter
Voltage Regulator
Negative Voltage Doubler
Positive Voltage Doubler
FEATURES
■
125mA (LT1054L)
■
■
■
3.5V to 7V (LT1054L)
■
■
■
■
■
APPLICATIONS
■
■
■
■
L , LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
BLOCK DIAGRAM
V REF
DESCRIPTION
The LT ? 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 100μA.
The internal oscillator of the LT1054 runs at a nominal
frequency of 25kHz. The oscillator pin can be used to ad-
just the switching frequency or to externally synchronize
the LT1054.
The LT1054 is pin compatible with previous converters
such the LTC1044/ICL7660.
6
V IN
8
LT1054/LT1054 Voltage Loss
REFERENCE
1
FEEDBACK/
SHUTDOWN
R
R
+
–
2.5V
7
OSC
OSC
DRIVE
CAP + 2
Q
Q
CAP – 4
DRIVE
+
C IN *
DRIVE
2
1
3.5V ≤ V IN ≤ 15V (LT1054)
3.5V ≤ V IN ≤ 7V (LT1054L)
C IN = C OUT = 100μF
INDICATES GUARANTEED
TEST POINT
LT1054
LT1054L
T J = 125°C
T J = 25°C
T J = –55°C
*EXTERNAL CAPACITORS
3 GND
+
C OUT *
0
0
25
50
75 100
125
5 –V OUT
OUTPUT CURRENT (mA)
1054 TA01?
DRIVE
LT1054 ? BD
1954lfg
1
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