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PDF TRI1461 Data sheet ( Hoja de datos )
| Número de pieza | TRI1461 | |
| Descripción | 600KHz Asynchronous Synchronous Step-Down DC/DC Converter | |
| Fabricantes | Fiti | |
| Logotipo |  |
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fitipower integrated technology lnc.
TRI1461
23V, 2A, 600KHz Asynchronous Synchronous
Step-Down DC/DC Converter
Description
The TRI1461 is a monolithic step-down switch mode
converter with a built-in power MOSFET. It achieves
2A output current over a wide input supply range with
excellent load and line regulation. Current mode
operation provides fast transient response and
eases loop stabilization. Fault condition protection
includes cycle-by-cycle current limiting and over
temperature protection.
The TRI1461 requires a minimum number of
available standard external components. The
TRI1461 is available in TSOT23-6 and SOT23-6
packages.
Features
● 2A Output Current
● 180mΩ Internal Power MOSFET Switch
● Stable with Low ESR Output Ceramic Capacitors
● Up to 92% Efficiency
● Fixed 600KHz Frequency
● Current Mode Operation
● Over-Temperature Protection with Hiccup-Mode
● Cycle-by-Cycle Over Current Protection
● Wide 4.5V to 23V Operating Input Range
● Output Adjustable from 0.805V to 15V
● 10uA Shutdown Current
● Available in TSOT23-6 and SOT23-6 Packages
Applications
● Battery Charger
● Pre-Regulator for Linear Regulators
● OLPC, Netbook
● Distributed Power System
● WLED Drivers
Pin Assignments
B05 Package (SOT-23-6)
SW VIN EN
654
(Marking)
123
BS GND FB
B07 Package (TSOT-23-6)
SW VIN EN
654
(Marking)
123
BS GND FB
Figure 1. Pin Assignment of TRI1461
TRI1461-1.3-AUG-2010
Ordering Information
TRI1461□□□□
ADJ: Output Voltage Adjustable
R: Tape / Reel
Package Type
B05: SOT-23-6
B07: TSOT-23-6
G: Green
1
1 page  
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Electrical Characteristics
(VIN=12V, TA=25℃, unless otherwise specified.)
Parameter
Test Conditions
Feedback Voltage
4.5V ≤ VIN ≤ 23V
Switch-On Resistance (*)
Switch Leakage
VEN = 0V, VSW = 0V
Current Limit (*)
Oscillator Frequency
Fold-back Frequency
VFB = 0V
Maximum Duty Cycle
Minimum On-Time (*)
Under Voltage Lockout Threshold Rising
Under Voltage Lockout Threshold Hysteresis
EN Input Low Voltage
EN Input High Voltage
EN Input Current
VEN = 2V
VEN = 0V
Supply Current (Shutdown)
VEN = 0V
Supply Current (Quiescent)
Over-Temperature Protection Threshold (*)
VEN = 2V, VFB = 1V
* Guaranteed by design
Note3：VIN = 5V, VOUT = 3.3V, maximum load current is about 1.4A.
TRI1461
Min
0.785
480
4.1
1.2
Typ
0.805
180
3
600
120
85
100
4.4
250
2.0
0.1
10
1.8
150
Max
0.825
10
720
4.7
0.4
Unit
V
mΩ
μA
A
KHz
KHz
%
ns
V
mV
V
V
μA
μA
mA
°C
TRI1461-1.3-AUG-2010
5
5 Page 
fitipower integrated technology lnc.
TRI1461
Outline Information
SOT-23- 6 Package (Unit: mm)
SYMBOLS
UNIT
A
A1
A2
B
D
E
E1
e
e1
L
DIMENSION IN MILLIMETER
MIN MAX
0.90 1.40
0.00 0.15
0.90 1.30
0.35 0.50
2.80 3.00
2.60 3.00
1.50 1.70
0.90 1.00
1.80 2.00
0.35 0.55
Note：Followed From JEDEC MO-178-C.
TSOT-23-6 Package (Unit: mm)
SYMBOLS
UNIT
A
A1
A2
B
D
E
E1
e
e1
L
DIMENSION IN MILLIMETER
MIN MAX
0.70 1.10
0.00 0.10
0.70 1.00
0.35 0.50
2.80 3.00
2.60 3.00
1.50 1.70
0.90 1.00
1.80 2.00
0.35 0.55
Note：Followed From JEDEC MO-193-C.
Life Support Policy
Fitipower’s products are not authorized for use as critical components in life support devices or other medical systems.
TRI1461-1.3-AUG-2010
11
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TRI1461.PDF ] | |
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