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PDF AME5296 Data sheet ( Hoja de datos )
| Número de pieza | AME5296 | |
| Descripción | Step Down DC/DC Converter | |
| Fabricantes | AME | |
| Logotipo |  |
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AME
AME5296
2A, 18V, 500KHz Synchronous
Step Down DC/DC Converter
n General Description
The AME5296 is a high frequency synchronous
stepdown DC-DC cnverter with built internal power
MOSFETs. That provides wide 4.5V to 18V input voltage
range and 2A continuous load current capability. The
AME5296 has synchronous mode operation for higher
efficiency over output current load range.
The AME5296 is current mode control scheme which
provides fast transient response. Internal compensation
function.
n Features
l Wide 4.5V to 18V Operating Input Range
l 100mΩ/40mΩ Low RDS(ON) internal Power
MOSFETs
l Proprietary Switching Loss Reduction Techn
-ique
l High Efficiency Synchronous Mode Operation
l Fixed 500KHz Switching Frequency
l External Programmable Soft Start
l OCP and Hiccup
l Thermal Shutdown
l Output Adjustable from 0.8V
l RoHS Compliant and Halogen Free
n Typical Application
VIN 4.5-18V
C1
22uF
25V
C3
1uF
C4
22nF
EN
IN BST
VCC
SW
AME5296
SS
EN FB
GND
R4
1C04Ω0.1uF
L1
4.7uH
R1
40.2K
R3
33K
R2
12.7K
3.3V 2A
VOUT
C2
47uF
n Application
l Notebook Systems and I/O Power
l Digital Set Top Boxes
l LCD Display, TV
l Networking, XDSL Modem
Rev. A.05
1
1 page  
AME
AME5296
n Absolute Maximum Ratings
2A, 18V, 500KHz Synchronous
Step Down DC/DC Converter
Parameter
VIN
VSW
VBST
All Other Pins
Junction Temperature
Lead Temperature
Storage Temperature
Maximum
-0.3 to 19
-0.3V (-5V for 10ns) to 19V (20V for 5ns)
VSW+6V
-0.3 to 6.5
150
260
-65 to +150
Unit
V
V
V
V
oC
oC
oC
n Recommended Operating Conditions
Parameter
Input Voltage
Output Voltage
Junction Temperature Range
Ambient Temperature Range
Symbol
VIN
VOUT
TJ
TA
Rating
4.5V to 18V
0.8V to VIN-3V
-40 to +125
-40 to +85
Unit
V
oC
n Thermal Information
Parameter
Package
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
TSOT-23-8
Internal Power Dissipation
Lead Temperature (Soldering 10sec)**
Die Attach
Conductive Epoxy
*
**
MMeILa-sSuTrDe-θ2J0C2oGn
backside
210F
center
of
molding
compound
if
IC
has
no
tab.
Symbol Maximum Unit
θJC 55
oC / W
θJA 100
PD
1250
mW
260 oC
Rev. A.05
5
5 Page 
AME
AME5296
(5V/DVivIN)
(2V/VDOivUT) C1
(5V/DViSvW)
C2
C3
(2A/DivI)L C4
Power Off from Input Voltage
VIN=12V, VOUT=3.3V, IOUT=0A
Time(50ms/Div)
(5V/DVivEN) C1
(2V/VDOivUT) C2
(5V/DViSvW)
C3
(2A/DivI)L C4
Power Off from EN
VIN=12V, VOUT=3.3V, IOUT=0A
Time(2s/Div)
(1V/VDOivUT)
(1V/DVivSS)
(10V/DViSvW) C3
C2
C1
(5A/DivI)L C4
Short Circuit Entry
VIN=12V, VOUT=3.3V, IOUT=0A
Time(5ms/Div)
Rev. A.05
2A, 18V, 500KHz Synchronous
Step Down DC/DC Converter
Power Off from Input Voltage
(5V/DVivIN)
VIN=12V, VOUT=3.3V, IOUT=2A
(2V/VDOivUT) C1
C2
(5V/DViSvW) C3
(2A/DivI)L C4
Time(5ms/Div)
(5V/DVivEN)
(2V/VDOivUT)
C1
C2
(5V/DViSvW)
C3
(2A/DivI)L C4
Power Off from EN
VIN=12IOVU,T=V2OAUT=3.3V,
Time(5ms/Div)
Short Circuit Recovery
VIN=12IOVU,T=V0OAUT=3.3V,
(1V/VDOivUT) C3
(10V/DViSvW)
(1V/DVivSS)
C2
C1
(5AD/ivI)L C4
Time(5ms/Div)
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AME5296.PDF ] | |
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