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PDF AP3211H Data sheet ( Hoja de datos )
| Número de pieza | AP3211H | |
| Descripción | 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER | |
| Fabricantes | BCD | |
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PART OBSOLETE - USE AP3211 and AP5100
Preliminary Datasheet
1.4MHz, 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER AP3211H
General Description
The AP3211H is a 1.4MHz fixed frequency, current
mode, PWM buck (step-down) DC-DC converter,
capable of driving a 1.5A load with high efficiency,
excellent line and load regulation. The device
integrates N-channel power MOSFET switch with
low on-resistance. Current mode control provides fast
transient response and cycle-by-cycle current limit.
A standard series of inductors are available from
several different manufacturers optimized for use
with the AP3211H. This feature greatly simplifies the
design of switch-mode power supplies.
The AP3211H is available in SOT-23-6 package.
Features
• Input Voltage Range: 4.5V to 23V
• Fixed 1.4MHz Frequency
• High Efficiency: up to 92%
• Output Current: 1.5A
• Current Mode Control
• Built-in Over Current Protection
• Built-in Thermal Shutdown Function
• Built-in UVLO Function
• Built-in Over Voltage Protection
• Built-in Soft-start
Applications
• LCD TV
• DPF
• Portable DVD
SOT-23-6
Figure 1. Package Type of AP3211H
Jun. 2014 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
1
1 page  
PART OBSOLETE - USE AP3211 and AP5100
Preliminary Datasheet
1.4MHz, 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER AP3211H
Electrical Characteristics
VIN=VEN=12V, VOUT=3.3V, TA=25ºC, unless otherwise specified.
Parameter
Input Voltage
Quiescent Current
Shutdown Supply Current
Feedback Voltage
Feedback Over Voltage Threshold
Feedback Bias Current
Switch On-resistance
Switch Leakage Current
Switch Current Limit
EN Pin Threshold
Input UVLO Threshold
Input UVLO Hysteresis
Oscillator Frequency
Max. Duty Cycle
Min. Duty Cycle
Minimum On Time
Thermal Shutdown
Thermal Shutdown Hysteresis
Soft-start Time
Symbol
VIN
IQ
ISHDN
VFB
VFBOV
IFB
RDSON
ILEAK
ILIM
VENH
VENL
VUVLO
VHYS
fOSC1
fOSC2
DMAX
DMIN
tON
TOTSD
THYS
tSS
Conditions
VFB=0.9V
VEN=0V
VFB=0.85V
ISW=1A
VIN=23V,
VEN=0V
VIN Rising
Short Circuit
VFB=0.6V
VFB=0.9V
Min
4.5
0.785
-0.1
Typ
0.8
0.1
0.810
0.972
0.385
Max
23
1.1
1.0
0.835
0.1
Unit
V
mA
µA
V
V
µA
Ω
0.1 10 µA
1.8 2.4
A
1.5
V
0.4
3.3 3.8 4.3
V
0.2 V
1.1 1.4 1.7 MHz
460 kHz
90 %
0%
100 ns
160 ºC
20 ºC
200 µs
Note 2: RDSON , tON, TOTSD, THYS and tSS are guaranteed by design.
Jun. 2014 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
5
5 Page 
PART OBSOLETE - USE AP3211 and AP5100
Preliminary Datasheet
1.4MHz, 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER AP3211H
Mounting Pad Layout
SOT-23-6
EE
Y
GZ
X
Dimensions
Value
Z
(mm)/(inch)
3.600/0.142
G
(mm)/(inch)
1.600/0.063
X
(mm)/(inch)
0.700/0.028
Y
(mm)/(inch)
1.000/0.039
E
(mm)/(inch)
0.950/0.037
Jun. 2014 Rev. 2. 4
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AP3211H.PDF ] | |
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