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PDF APW7277 Data sheet ( Hoja de datos )
| Número de pieza | APW7277 | |
| Descripción | Synchronous Boost Converter | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de APW7277 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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APW7277
5V, 5A, 1.2MHz Synchronous Boost Converter
Features
General Description
• 92% Effiicency Synchronous Boost Converter With The APW7277 is a synchronous rectifier, fixed switching
1000-mA Output Current From 1.8V Input
frequency (1.2MHz typical), and current-mode step-up
• Stable with Low ESR Output Capacitors
regulator. The device allows use of small inductors and
• Fixed 1.2MHz Oscillator Frequency
output capacitors for USB devices. The current-mode
• Low EMI Converter (Integrated Anti-Ringing control scheme provides fast transient response and
Function)
good output voltage accuracy.
• Low Battery Output
At light loads, the APW7277 will automatically enter in
Pulse Frequency Modulation (PFM) operation to reduce
• Integrated Power Save Mode Operation to Improve the dominant switching losses. During PFM operation,
Light Load Efficiency
• Load Disconnected During Shutdown
the IC consumes very low quiescent current and
maintains high efficiency over the complete load range.
• Output Current-Limit Protection
The APW7277 also includes current-limit and over-
• Over Temperature Protection
temperature shutdown to prevent damage in the event
• Under Voltage Protection
of an output overload.
• Enable/Shutdown Function
The APW7277 is available in 4mmx4mm TQFN4x4-16
• Available in TQFN4x4-16 and DFN3x3-12 Packages and DFN3x3-12 packages.
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
Pin Configuration
• Power Bank
• Tablet
• Portable Equiment
(Exposed Pad)
PGND
PGND 1
PGND 2
NC 3
VBAT 4
PSI 5
NC 6
(Exposed
PAD)
PGND
12 SW
11 SW
10 VOUT
9 FB
8 GND
7 EN
Exposed PAD on bankside
DFN3x3-12
TOP VIEW
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Sep, 2013
1
www.anpec.com.tw
1 page  
APW7277
Pin Description
PIN
NAME
FUNCTION
1,15,16
2
VOUT
NC
Converter Output and IC Supply Voltage.
ENnoabInlteerninal CCohnanergcteionD. one
3,4
5,6,7
SW
PGND
Converter Switch Pin. Connect inductor here.
Enable in Charge Done
Power Ground. Connect these pins to GND.
8
VBAT
Converter Supply Voltage.
9 LBI Low Battery Indicator.
Enable in Charge Done
10 PSI Power Saving Input. Force VPSI exceed 1V enter PFM. Left VPSI below 0.4V enter PWM mode.
11
EN
Device Enable Control Input. Force VEN exceed 1V enable the device. Left VEN below 0.4V to
shutdown.
12
LBO
Low Battery Output.
13
GND
Signal Ground. Connect this pin to PGND.
14 FB Converter Feedback Input.
Exposed Pad
PGND
Power Ground. Tie this pin to the ground island/plane through the lowest impedance connection
available.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Sep, 2013
5
www.anpec.com.tw
5 Page 
APW7277
Application Information
Recommended Minimum Footprint
The via diameter =0.012
Hole size =0.008
0.024
001.4
0.021
0.026
layout
0.079
TQFN4x4-16
Unit :
Inch
The via diameter =0.3048
Hole size =0.2032
0.6
0.35
0.55
0.65
layout
2
TQFN4x4-16
Unit :
mm
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Sep, 2013
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet APW7277.PDF ] | |
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