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PDF AP3512E Data sheet ( Hoja de datos )
| Número de pieza | AP3512E | |
| Descripción | 2A SYNCHRONOUS DC-DC BUCK CONVERTER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Description
AP3512E
18V, 2A SYNCHRONOUS DC-DC BUCK CONVERTER
Pin Assignments
The AP3512E is a 500kHz fixed frequency, current mode, PWM
synchronous buck (step-down) DC-DC converter, capable of driving a
2A load with high efficiency, excellent line and load regulation. The
AP3512E exhibits high efficiency at light load. 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.
The AP3512E employs complete protection to ensure system
security, including output Over Voltage Protection, input Under
Voltage Lock Out, programmable Soft-start, Over Temperature
Protection and hiccup mode Short Circuit Protection.
BS 1
IN 2
SW 3
GND 4
This IC is available in SO-8 and SO-8EP packages.
Features
Input Voltage Range: 4.5V to 18V
Fixed 500kHz Frequency
High Efficiency at Light Load
Output Current: 2A
Current Mode Control
Built-in Over Current Protection
Built-in Thermal Shutdown Function
Built-in UVLO Function
Built-in Over Voltage Protection
Programmable Soft-start
Hiccup Mode SCP
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
BS 1
IN 2
SW 3
GND 4
Applications
Monitor
TV
STB
Datacom
(Top View)
8 SS
7 EN
6 COMP
5 FB
SO-8
(Top View)
8 SS
7 EN
EP
6 COMP
5 FB
SO-8EP
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP3512E
Document number: DS38502 Rev. 1 - 2
1 of 14
www.diodes.com
April 2016
© Diodes Incorporated
1 page  
Electrical Characteristics (VIN=VEN=12V, VOUT=3.3V, TA=+25ºC, unless otherwise specified.)
Symbol
Parameter
Conditions
SUPPLY VOLTAGE (IN PIN)
VIN Input Voltage
–
IQ Quiescent Current
VFB=1V, VEN=3.3V
ISHDN
Shutdown Supply Current
VEN=0V
UNDER VOLTAGE LOCKOUT
VUVLO
VHYS
Input UVLO Threshold
Input UVLO Hysteresis
VIN Rising
–
ENABLE (EN PIN)
– EN Shutdown Threshold Voltage
–
– EN Shutdown Threshold Voltage Hysteresis –
(Note 5)
– EN Lockout Threshold Voltage
–
– EN Lockout Hysteresis
–
VOLTAGE REFERENCE (FB PIN)
VFB
VFBOV
Feedback Voltage
Feedback Over Voltage Threshold
–
–
IFB Feedback Bias Current
VFB=1V
MOSFET
RDSONH
High-side Switch On-resistance (Note 6)
ISW=0.2A&0.7A
RDSONL
Low-side Switch On-resistance (Note 6)
ISW=-0.2A&-0.7A
CURRENT LIMIT
ILEAKH
High-side Switch Leakage Current
ILIMH
High-side Switch Current Limit
VIN=18V, VEN=0V,
VSW=0V
–
ILIML
Low-side Switch Current Limit
From drain to source
SWITCHING REGULATOR
fOSC1
fOSC2
Oscillator Frequency
Short Circuit Oscillator Frequency
–
–
DMAX
Max. Duty Cycle
VFB=0.85V
DMIN
Min. Duty Cycle
VFB=1V
ERROR AMPLIFIER
AEA Error Amplifier Voltage Gain (Note 5)
–
GEA Error Amplifier Transconductance
–
GCS COMP to Current Sense Transconductance –
AP3512E
Document number: DS38502 Rev. 1 - 2
5 of 14
www.diodes.com
Min
4.5
–
–
3.65
–
1.1
–
2.2
–
0.907
–
-0.1
–
–
–
4.3
–
410
–
–
–
–
–
–
Typ
–
1.2
0.1
4.0
0.2
1.5
350
2.5
210
0.925
1.1
–
100
100
0.1
5.6
50
500
180
90
–
400
800
5.2
AP3512E
Max Unit
18 V
1.4 mA
1.0 µA
4.25 V
–V
2V
– mV
2.7 V
– mV
0.943
–
0.1
V
V
µA
– mΩ
– mΩ
10 μA
–A
– mA
590 kHz
– kHz
–%
0%
– V/V
– μA/V
– A/V
April 2016
© Diodes Incorporated
5 Page 
Package Outline Dimensions (Cont. All dimensions in mm(inch).)
(2) Package Type: SO-8EP
3.800(0.150)
4.000(0.157)
2.110(0.083)
2.710(0.107)
5.800(0.228)
6.200(0.244)
1.270(0.050)
TYP
0.300(0.012)
0.510(0.020)
0.050(0.002)
0.150(0.006)
0°
8° 0.400(0.016)
1.270(0.050)
0.150(0.006)
0.250(0.010)
Note: Eject hole, oriented hole and mold mark is optional.
AP3512E
4.700(0.185)
5.100(0.201)
1.350(0.053)
1.550(0.061)
AP3512E
Document number: DS38502 Rev. 1 - 2
11 of 14
www.diodes.com
April 2016
© Diodes Incorporated
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AP3512E.PDF ] | |
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