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PDF EL7512 Data sheet ( Hoja de datos )
| Número de pieza | EL7512 | |
| Descripción | High Frequency PWM Step-Up Regulator | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EL7512 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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®
Data Sheet
April 12, 2002
EL7512
FN7290
High Frequency PWM Step-Up Regulator
The EL7512 is a high frequency, high
efficiency step-up DC:DC regulator
operated at fixed frequency PWM
mode. With an integrated 1A MOSFET, it can deliver up to
600mA output current at up to 90% efficiency. The adjustable
switching frequency is up to 1.2MHz, making it ideal for DSL
applications.
When shut down, it draws <3µA of current. This feature,
along with the minimum starting voltage of 2V, makes it
suitable for portable equipment powered by one lithium ion
or 3 to 4 NiMH cells.
The EL7512 is available in a 10-pin MSOP package, with
maximum height of 1.1mm. With proper external
components, the whole converter takes less than 0.25in2
PCB space.
This device is specified for operation over the full -40°C to
+85°C temperature range.
Pinout
EL7512
(10-PIN MSOP)
TOP VIEW
VIN
(2V- C1
9V)
10µF
L1
10µH
D1
1 PGND
LX 10
R3
100k
2 SGND
3 RT
4 EN
5 LBI
VDD 9
FB 8
SS 7
LBO 6
C3
20nF
VOUT
R4 C5 (12V up
1kΩ
to
47µF 400mA)
C4
0.1µF
R2
80.6k
R1
10kΩ
C10
4.7nF
Features
• 90% efficiency
• Up to 600mA IOUT
• 5V < VOUT < 18V
• VIN > 2V
• Up to 1.2MHz adjustable frequency
• < 3µA shutdown current
• Adjustable soft-start
• Low battery detection
• Internal thermal protection
• 1.1mm max height 10-pin MSOP package
Applications
• 3V to 5V, 12V, and 18V converters
• 5V to 12V and 16V converters
• TFT-LCD
• DSL
• Portable equipment
• Desktop equipment
Ordering Information
PART NUMBER
EL7512CY
EL7512CY-T7
EL7512CY-T13
PACKAGE
10-Pin MSOP
10-Pin MSOP
10-Pin MSOP
TAPE &
REEL
-
7”
13”
PKG. NO.
MDP0043
MDP0043
MDP0043
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
1 page  
EL7512
Typical Performance Curves (Continued)
VFB vs VDD
1.355
1.35
1.345
1.34
1.335
1.33
1.325
1.32
567
89
VDD
10 11 12
IDD vs FS
3.6
VDD=10V
3.4 VO=12V-18V
3.2
3
2.8
2.6
2.4
2.2
2
650 750 850 950 1050 1150 1250
FS (kHz)
Steady State Operation (inductor discontinuous
conduction) VIN=5V, VO=12V, IO=25mA
∆VI
FS vs RT
1400
1200
VDD=10V
1000
800
600
400
200
0
50 100 150
RT (kΩ)
Steady State Operation (inductor continuous
conduction) VIN=5V, VO=12V, IO=300mA
200
∆VI
VLX
∆VO
iL
Power-Up
VIN=5V, VO=12V, IO=300mA
VLX
∆VO
iL
VIN
VO
iL
Load Transient Response
VIN=5V, VO=12V, IO=50mA-300mA
iO
∆VO
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet EL7512.PDF ] | |
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