LT1930ES5#TRMPBF Linear Technology, LT1930ES5#TRMPBF Datasheet

IC DC/DC CONV STEP-UP TSOT-23-5

LT1930ES5#TRMPBF

Manufacturer Part Number
LT1930ES5#TRMPBF
Description
IC DC/DC CONV STEP-UP TSOT-23-5
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet

Specifications of LT1930ES5#TRMPBF

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.26 ~ 34 V
Current - Output
1A
Frequency - Switching
1.2MHz
Voltage - Input
2.45 ~ 16 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
LT1930ES5#TRMPBFTR

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TYPICAL APPLICATIO
FEATURES
APPLICATIO S
ThinSOT is a trademark of Linear Technology Corporation.
TFT-LCD Bias Supply
Digital Cameras
Cordless Phones
Battery Backup
Medical Diagnostic Equipment
Local 5V or 12V Supply
External Modems
PC Cards
xDSL Power Supply
, LTC and LT are registered trademarks of Linear Technology Corporation
V
1.2MHz Switching Frequency (LT1930)
2.2MHz Switching Frequency (LT1930A)
Low V
High Output Voltage: Up to 34V
5V at 480mA from 3.3V Input (LT1930)
12V at 250mA from 5V Input (LT1930A)
Wide Input Range: 2.6V to 16V
Uses Small Surface Mount Components
Low Shutdown Current: < 1 A
Low Profile (1mm) ThinSOT
Pin-for-Pin Compatible with the LT1613
5V
IN
Figure 1. 5V to 12V, 300mA Step-Up DC/DC Converter
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R EMK316BJ475ML
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
*OPTIONAL
CESAT
SHDN
C1
2.2 F
Switch: 400mV at 1A
4
SHDN
V
IN
U
5
LT1930
10 H
GND
L1
2
SW
FB
1
3
D1
TM
U
Package
R1
113k
R2
13.3k
C3*
10pF
1930/A F01
C2
4.7 F
V
12V
300mA
OUT
Step-Up DC/DC Converters
DESCRIPTIO
The LT
power SOT-23 switching regulators. Both include an
internal 1A, 36V switch allowing high current outputs to be
generated in a small footprint. The LT1930 switches at
1.2MHz, allowing the use of tiny, low cost and low height
capacitors and inductors. The faster LT1930A switches at
2.2MHz, enabling further reductions in inductor size.
Complete regulator solutions approaching one tenth of a
square inch in area are achievable with these devices.
Multiple output power supplies can now use a separate
regulator for each output voltage, replacing cumbersome
quasi-regulated approaches using a single regulator and
custom transformers.
A constant frequency internally compensated current mode
PWM architecture results in low, predictable output noise
that is easy to filter. Low ESR ceramic capacitors can be
used at the output, further reducing noise to the millivolt
level. The high voltage switch on the LT1930/LT1930A is
rated at 36V, making the device ideal for boost converters
up to 34V as well as for single-ended primary inductance
converter (SEPIC) and flyback designs. The LT1930 can
generate 5V at up to 480mA from a 3.3V supply or 5V at
300mA from four alkaline cells in a SEPIC design.
The LT1930/LT1930A are available in the 5-lead ThinSOT
package.
®
1930 and LT1930A are the industry’s highest
90
85
80
75
70
65
60
55
50
0
1A, 1.2MHz/2.2MHz,
U
100
LOAD CURRENT (mA)
Efficiency
V
IN
LT1930/LT1930A
200
= 3.3V
V
IN
in ThinSOT
300
= 5V
1930 TA01
400
1

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LT1930ES5#TRMPBF Summary of contents

Page 1

... Pin-for-Pin Compatible with the LT1613 U APPLICATIO S TFT-LCD Bias Supply Digital Cameras Cordless Phones Battery Backup Medical Diagnostic Equipment Local 5V or 12V Supply External Modems PC Cards xDSL Power Supply , LTC and LT are registered trademarks of Linear Technology Corporation ThinSOT is a trademark of Linear Technology Corporation. U TYPICAL APPLICATIO ...

Page 2

LT1930/LT1930A ABSOLUTE AXI U RATI GS (Note 1) V Voltage .............................................................. 16V IN SW Voltage ................................................– 0.4V to 36V FB Voltage .............................................................. 2.5V Current Into FB Pin .............................................. 1mA SHDN Voltage ......................................................... 10V Maximum Junction Temperature ......................... ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current 7.0 NOT SWITCHING 6.5 6.0 LT1930A 5.5 5.0 4.5 LT1930 4.0 3.5 3.0 –50 – 100 50 75 TEMPERATURE ( C) 1930/A G01 Current Limit 1.6 1.4 1.2 1.0 ...

Page 4

LT1930/LT1930A W BLOCK DIAGRA 1.255V REFERENCE V OUT R1 (EXTERNAL (EXTERNAL) SHUTDOWN 4 SHDN U OPERATIO The LT1930 uses a constant frequency, current-mode control scheme to provide excellent line and load regula- tion. Operation can ...

Page 5

U U APPLICATIONS INFORMATION LT1930 AND LT1930A DIFFERENCES Switching Frequency The key difference between the LT1930 and LT1930A is the faster switching frequency of the LT1930A. At 2.2MHz, the LT1930A switches at nearly twice the rate of the LT1930. Care ...

Page 6

LT1930/LT1930A U U APPLICATIONS INFORMATION CAPACITOR SELECTION Low ESR (equivalent series resistance) capacitors should be used at the output to minimize the output ripple voltage. Multi-layer ceramic capacitors are an excellent choice, as they have extremely low ESR and are ...

Page 7

U U APPLICATIONS INFORMATION V OUT 0.2V/DIV AC COUPLED I LI 0.5A/DIV AC COUPLED LOAD 250mA CURRENT 150mA 200 s/DIV Figure 5. Transient Response of Step-Up Converter with 33 F Tantalum Output Capacitor and No Phase Lead Capacitor DIODE SELECTION ...

Page 8

LT1930/LT1930A U TYPICAL APPLICATIO S 4-Cell to 5V SEPIC Converter 6. 2.2 F LT1930 4-CELL 4 BATTERY SHDN SHDN FB GND 2 C1: TAIYO-YUDEN X5R LMK212BJ225MG D1: ON SEMICONDUCTOR ...

Page 9

U TYPICAL APPLICATIO 3. Boost Converter 4.7 F LT1930 4 3 OFF ON SHDN FB GND 2 C1: TAIYO-YUDEN ...

Page 10

LT1930/LT1930A U TYPICAL APPLICATIO S 9V, 18V, –9V Triple Output TFT-LCD Bias Supply with Soft-Start LT1930 SS 30k 4 V SHDN 3.3V GND ...

Page 11

... SC-74A (EIAJ) FOR ORIGINAL JEDEL MO-193 FOR THIN Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...

Page 12

... Micropower Constant Off-Time DC/DC Converter in 5-Lead ThinSOT LT1617 Micropower Inverting DC/DC Converter in 5-Lead ThinSOT LT1931/LT1931A Inverting 1.2MHz/2.2MHz Switching Regulator in 5-Lead ThinSOT Burst Mode is a trademark of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com 3 ...

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