Freelance Electronics Components Distributor
Closed Dec 25th-26th
800-300-1968

We Stock Hard to Find Parts
My Account | My Orders | My Cart
Questions? (800) 300-1968

LT1054CP

Part # LT1054CP
Description SWTH CAPACITOR V/CONVERTER W/REGULATORS - Rail/Tube
Category IC
Availability Out of Stock
Qty 0
Qty Price
1 + $0.94397

Related Items

LT1054CN8
Linear Technology
IC
LT1054CN8
$2.16569
LT1054CNB
Linear Technology
IC
LT1054CNB
 
LT1054ISW
Linear Technology
IC
LT1054ISW
$0.98508
LT1057MH/883C
Linear Technology
IC
LT1057MH/883C
$114.80111
LT1058AML/883C
Linear Technology
IC
LT1058AML/883C
$99.49431
LT1058CN
Linear Technology
IC
LT1058CN
$9.58329


Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.


  
 
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Output Current . . . 100 mA
D Low Loss . . . 1.1 V at 100 mA
D Operating Range . . . 3.5 V to 15 V
D Reference and Error Amplifier for
Regulation
D External Shutdown
D External Oscillator Synchronization
D Devices Can Be Paralleled
D Pin-to-Pin Compatible With the
LTC1044/7660
description/ordering information
The LT1054 is a bipolar, switched-capacitor
voltage converter with regulator. It provides higher
output current and significantly lower voltage
losses than previously available converters. An
adaptive-switch drive scheme optimizes
efficiency over a wide range of output currents.
Total voltage drop at 100-mA output current
typically is 1.1 V. This applies to the full
supply-voltage range of 3.5 V to 15 V. Quiescent
current typically is 2.5 mA.
The LT1054 also provides regulation, a feature previously not available in switched-capacitor voltage
converters. By adding an external resistive divider, a regulated output can be obtained. This output is regulated
against changes in both input voltage and output current. The LT1054 also can be shut down by grounding the
feedback terminal. Supply current in shutdown typically is 100 µA.
The internal oscillator of the LT1054 runs at a nominal frequency of 25 kHz. The oscillator terminal can be used
to adjust the switching frequency or to externally synchronize the LT1054.
The LT1054C is characterized for operation over a free-air temperature range of 0°C to 70°C. The LT1054I is
characterized for operation over a free-air temperature range of −40°C to 85°C.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (P) Tube of 50 LT1054IP LT1054IP
−40°C to 85°C
SOIC (DW)
Tube of 40 LT1054IDW
LT1054I
−40 C to 85 C
SOIC (DW)
Reel of 2000 LT1054IDWR
LT1054I
PDIP (P) Tube of 50 LT1054CP LT1054CP
0°C to 70°C
SOIC (DW)
Tube of 40 LT1054CDW
LT1054C
0 C to 70 C
SOIC (DW)
Reel of 2000 LT1054CDWR
LT1054C
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright 2004, Texas Instruments Incorporated
    !"#   $"%&! '#(
'"! !  $#!! $# )# #  #* "#
'' +,( '"! $!#- '#  #!#&, !&"'#
#-  && $##(
DW PACKAGE
(TOP VIEW)
P PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
FB/SD
CAP+
GND
CAP−
V
CC
OSC
V
REF
V
OUT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
NC
FB/SD
CAP+
GND
CAP−
NC
NC
NC
NC
V
CC
OSC
V
REF
V
OUT
NC
NC
NC − No internal connection

  
 
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram
V
REF
Ref
+
−
OSC
Q
Q
Drive
CAP +
V
CC
GND
V
OUT
FB/SD
OSC
2.5 V
CAP −
C
OUT
†
C
IN
†
†
External capacitors
Pin numbers shown are for the P package.
Drive
Drive
Drive
R
R
1
7
3
5
2
4
86
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage, V
CC
(see Note 1) 16 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
: FB/SD 0 V to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OSC 0 V to V
ref
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction temperature, T
J
(see Note 2): LT1054C 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LT1054I 135°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Notes 3 and 4): DW package 57°C/W. . . . . . . . . . . . . . . . . . . . . . . . . .
P package 85°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The absolute maximum supply-voltage rating of 16 V is for unregulated circuits. For regulation-mode circuits with V
OUT
≤ 15 V, this
rating may be increased to 20 V.
2. The devices are functional up to the absolute maximum junction temperature.
3. Maximum power dissipation is a function of T
J
(max), θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable
ambient temperature is P
D
= (T
J
(max) − T
A
)/θ
JA
. Operating at the absolute maximum T
J
of 150°C can impact reliability.
4. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN MAX
UNIT
V
CC
Supply voltage 3.5 15 V
T
A
Operating free-air temperature range
LT1054C 0 70
°C
T
A
Operating free-air temperature range
LT1054I −40 85
°
C

  
 
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER
T
A
†
LT1054C
LT1054I
UNIT
PARAMETER
T
A
†
MIN TYP
‡
MAX
UNIT
V
O
Regulated output voltage V
CC
= 7 V, T
J
= 25°C, R
L
= 500 Ω, See Note 5 25°C −4.7 −5 −5.2 V
Input regulation V
CC
= 7 V to 12 V, R
L
= 500 Ω, See Note 5 Full range 5 25 mV
Output regulation V
CC
= 7 V, R
L
= 100 Ω to 500 Ω, See Note 5 Full range 10 50 mV
Voltage loss,
C
I
= C
O
= 100- F tantalum
I
O
= 10 mA
Full range
0.35 0.55
V
Voltage loss,
V
CC
− |V
O
(see Note 6)
C
I
= C
O
= 100-µF tantalum
I
O
= 100 mA
Full range
1.1 1.6
V
Output resistance ∆I
O
= 10 mA to 100 mA, See Note 7 Full range 10 15 Ω
Oscillator frequency V
CC
= 3.5 V to 15 V Full range 15 25 35 kHz
V
ref
Reference voltage
25°C 2.35 2.5 2.65
V
V
ref
Reference voltage I
(REF)
= 60 µA
Full range 2.25 2.75
V
Maximum switch current 25°C 300 mA
I
CC
Supply current
I
O
= 0
V
CC
= 3.5 V
Full range
2.5 4
mA
I
CC
Supply current I
O
= 0
V
CC
= 15 V
Full range
3 5
mA
Supply current in shutdown V
(FB/SD)
= 0 V Full range 100 200 µA
†
Full range is 0°C to 70°C for the LT1054C and −40°C to 85°C for the LT1054I.
‡
All typical values are at T
A
= 25°C.
NOTES: 5. All regulation specifications are for a device connected as a positive-to-negative converter/regulator with R1 = 20 kΩ, R2 = 102.5 kΩ,
external capacitor C
IN
= 10 µF (tantalum), external capacitor C
OUT
= 100 µF (tantalum) and C1 = 0.002 µF (see Figure 15).
6. For voltage-loss tests, the device is connected as a voltage inverter, with terminals 1, 6, and 7 unconnected. The voltage losses
may be higher in other configurations. C
IN
and C
OUT
are external capacitors.
7. Output resistance is defined as the slope of the curve (∆V
O
versus ∆I
O
) for output currents of 10 mA to 100 mA. This represents
the linear portion of the curve. The incremental slope of the curve is higher at currents less than 10 mA due to the characteristics
of the switch transistors.
1234567NEXT
Address
Freelance Electronics
13197 Sandoval Street
Santa Fe Springs, CA 90670
 
Hours of Operation  (Holiday Hours)
Monday-Friday 7:30am-4:30pm PST
(Deadline for next day shipment 2:00pm PST)
Seal
Government Cage code#-1V4R6
Duns Number# 788130532
Certified Small Disadvantaged Business
Customer Service
Company
Information
Connect with Us
Twitter Facebook Instagra,
This site is protected by Trustwave's Trusted Commerce program