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PDF AX5510 Data sheet ( Hoja de datos )
| Número de pieza | AX5510 | |
| Descripción | Boost Converter | |
| Fabricantes | AXElite | |
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AX5510
680K/1.2MHz, High Voltage, Boost Converter
GENERAL DESCRIPTION
The AX5510 is a high performance, high efficiency step up DC-DC Converter with
integrated 3A. The AX5510 converter input voltage ranging from 2.6 to 5.5V. The Output
voltage can be set up to 27V. The selectable frequency of 680 kHz and 1.2 MHz allows the
use of small external inductors and capacitors and provides fast transient response. Current
mode control with external compensation network makes it easy to stabilize the system and
keep maximum flexibility. Programmable soft start function minimizes impact on the input
power system. Internal power MOSFET with very low RDS (ON) provides high efficiency.
The AX5510 automatically transits from PWM to PFM during light load condition further
increasing efficiency. The converter also provides protection functions such as Current Limit
and Thermal shutdown. The AX5510 is available in space-saving MSOP-10L-EP,
MOSP-8L-EP, TDFN-10L and SOP-8L-EP packages.
FEATURES
- 2.6V to 5.5V operating input voltage range
- Adjustable output voltage range up to 27V
- Up to 3A output switch current
- 680K/1.2MHz Selectable Switching Frequency
- Programmable soft-start function
- External Compensation Network
- Current limit and Thermal shutdown protection
- Under voltage Lockout
- ≤ 1µA Shutdown Current
- Available in the Pb-Free MSOP-10L-EP, MSOP-8L-EP ,TDFN-10L and SOP-8L-EP
Packages
BLOCK DIAGRAM
VCC
7uA
SS
FB
COMP
Soft
Start
1.238V
Reference
Error Amplifier
Summing
Comparator
Thermal
Shutdown
Control and
Driver Logic
Enable/
Disable
EN
LX
N-MOS
FREQ
SGND
Oscillator
Slope
Compensation
Current
Sense
PGND
1/16
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.3 Oct.19, 2011
1 page  
AX5510
APPLICATION CIRCUIT
(1) FREQ=High (Frequency=1.2MHz) (MSOP-10L and TDFN-10L)
VIN=5V
R3
4.7~100Ω
C2
2*10uF
C3
0.1uF
R4
1M
C5
1nF
L1
R6
100K
C7
100pF
4.7uH
U1
8 VCC
9 FREQ
3 EN
1 COMP
10 SS
C6
10nF
LX 6
LX 7
FB 2
PGND 5
SGND 4
AX5510
VOUT=12V
D1
B340A
C1 R2
130K
220pF
C3
R8 3*10uF
15K
R2
VOUT = 1.238V X (1 + ------- )
R8
R8 Suggest 10K~30K
VIN ≦ 4.5V, R3=10Ω
VIN > 4.5V, R3=100Ω
(2) FREQ=Low (Frequency=680KHz) (MSOP-10L and TDFN-10L)
VIN=5V
L1
R3 6.8uH
4.7~100Ω
U1
8 VCC
R4
C2
3 EN
1M
2*10uF
9 FREQ
C3
0.1uF
C5
1nF
R7
10K
R6
56K
1 COMP
10 SS
C6
C7
10nF
150pF
LX 6
LX 7
FB 2
PGND 5
SGND 4
AX5510
D1
B340A
VOUT=12V
C1 R2
130K
220pF
C3
R8 3*10uF
15K
R2
VOUT = 1.238V X (1 + ------- )
R8
R8 Suggest 10K~30K
VIN ≦ 4.5V, R3=10Ω
VIN > 4.5V, R3=100Ω
5/16
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.3 Oct.19, 2011
5 Page 
TYPICAL CHARACTERISTICS (CONTINUOUS)
AX5510
11/16
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.3 Oct.19, 2011
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AX5510.PDF ] | |
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