Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

LTC3523 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3523
Description  Synchronous 600mA Step-Up and 400mA Step-Down DC/DC Converters
PDF  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3523 Datasheet(HTML) 5 Page - Linear Technology

  LTC3523 Datasheet HTML 1Page - Linear Technology LTC3523 Datasheet HTML 2Page - Linear Technology LTC3523 Datasheet HTML 3Page - Linear Technology LTC3523 Datasheet HTML 4Page - Linear Technology LTC3523 Datasheet HTML 5Page - Linear Technology LTC3523 Datasheet HTML 6Page - Linear Technology LTC3523 Datasheet HTML 7Page - Linear Technology LTC3523 Datasheet HTML 8Page - Linear Technology LTC3523 Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 16 page
background image
LTC3523/LTC3523-2
5
3523fb
Normalized RDS(ON) vs
Temperature
Step-Up No-Load Input Current
vs VIN
PIN FUNCTIONS
FB1 (Pin 1): Step-Up Converter Feedback Input to the Er-
ror Amplifier. Connect resistor divider tap to this pin. The
output voltage can be adjusted from 1.8V to 5.25V by:
VOUT(STEP-UP) =+
⎛
⎝⎜
⎞
⎠⎟
12
1
1
2
.•
V
R
R
See Block Diagram.
VIN1 (Pin 2): Step-Up Converter Power Voltage Input. This
pin can be connected to a different supply than VIN2. This
pin must be connected to a valid supply voltage.
PGOOD1 (Pin 3): Step-Up Converter Power Good Com-
parator Output. This open-drain output is pulled low when
VFB1 < –9% of its regulation voltage.
VOUT(Pin4):Step-UpConverterOutputVoltageSenseInput
and Drain of the Internal Synchronous Rectifier MOSFET.
Driver bias is derived from VOUT. PCB trace length from
VOUT to the output filter capacitor(s) should be as short
and wide as possible.
Mode Transition Response
TEMPERATURE (°C)
–45
1.2
15
3523 G10
0.9
0.7
–25
–5
35
0.6
0.5
1.3
1.1
1.0
0.8
55
75
PMOS
NMOS
INPUT VOLTAGE (V)
1.5
0
50
150
200
250
500
350
2.5
3.5
4
3523 G11
100
400
450
300
2
3
4.5
5
VOUT = 5V
VOUT = 3.3V
VOUT = 2.8V
VOUT_BST
50mV/DIV
VOUT_BCK
20mV/DIV
MODE
2V/DIV
200μs/DIV
3523 G12
VOUT1 = 3.3V
VOUT2 = 1.2V
VIN = 2.4V
IOUT1 = 20mA
IOUT2 = 25mA
COUT1 = COUT2 = 10μF
L1 = L2 = 4.7μH
Maximum IOUT vs VIN for the
Step-Up Converter
Maximum IOUT vs VIN for the
Step-Down Converter
INPUT VOLTAGE (V)
1
0
50
150
200
250
500
350
2
3
3523 G13
100
400
450
300
4
5
VOUT = 2.5V
VOUT = 3.3V
VOUT = 5V
INPUT VOLTAGE (V)
1
250
300
350
5
3523 G14
200
150
0
2
3
4
1.5
2.5
3.5
4.5
100
50
450
400
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.2V
TYPICAL PERFORMANCE CHARACTERISTICS (T
A = 25°C unless otherwise noted)



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com