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PDF APW7276 Data sheet ( Hoja de datos )
| Número de pieza | APW7276 | |
| Descripción | PMIC | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de APW7276 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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APW7276
PMIC for LCD Bias Power
Features
• Input Voltage Range from 2.7V to 5.5V
• Positive & Negative Charge Pump for VGH & VGL
• High Performance Operation Amplifier
- +100mA Output Short Circuit Current
- 13V/µs Slew Rate
- 10MHz, -3dB Bandwidth
• Control Output for External P-MOSFET to Support
Completely Disconnecting the Battery
• Adjustable Power Sequence by External Capacitor
• Internal Soft-start
• Cycle By Cycle Current Limit
• Multiple Overload Protection
• Over Temperature Protection
• Available in TQFN3x3-20 Package
• Halogen and Lead Free Available (RoHS Compliant)
General Description
The APW7276 integrates with a high-performance step-
up converter, two charge pump controllers and one high
current operational amplifiers for TFT-LCD applications.
The main step-up regulator is a current-mode, fixed-fre-
quency PWM switching regulator. The 1.5MHz switching
frequency allows the usage of low-profile inductors and
ceramic capacitors to minimize the thickness of LCD panel
designs.The charge pump controllers provide regulated
the gate-driver of TFT-LCD VGH and VGL supplies.The am-
plifiers are ideal for VCOM applications, with 100mA
output short circuit current drive, 10MHz bandwidth, and
13V/µs slew rate. All inputs and outputs are rail-to-rail.
The APW7276 is available in a tiny 3mm x 3mm 20-pin
QFN package (TQFN3x3-20).
Applications
• Panel
Simplified Application Circuit Pin Configuration
Step-up
Converter
VCOM
GND
REF
FBN
GND
DRVN
1
2
3
4
5
GND
15 LX
14 EN
13 PS
12 POS
11 GND
Positive
Charge
Pump
Negative
Charge
Pump
= Thermal Pad (connected to GND plane
for better heat dissipation)
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.3 - Jun., 2013
1
www.anpec.com.tw
1 page  
APW7276
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VIN=3.6V and TA= 25oC.
Symbol
Parameter
Test Conditions
SEQUENCE
TDEL1
PS Delay Time
TDEL2
Delay Time Between VAVDD to
VGL
TDEL3
Delay Time Between VGL to VGH
VCOMP BUFFER
AOL Open Loop Gain
(Note 4)
(Note 4)
(Note 4)
(Note 4)
VOH Output Voltage High
IOUT=100µA
IOUT=5mA
VOL Output Voltage Low
IOUT=100µA
IOUT=5mA
ISC Short Circuit Current
IVCOM Continuous Output Current
VCOM discharge resistance
Power Supply Rejection Ratio (Note 4)
-3dB Bandwidth
(Note 4)
GBWP Gain Bandwidth Product
(Note 4)
SR Slew Rate
(Note 4)
Note 4: Guarantee by design, not production test
APW7276
Unit
Min. Typ. Max.
- 15 - ms
1 - 15 ms
- 15 - ms
- 110
VSUP-15 VSUP-3
-
-
dB
mV
VSUP-150 VSUP-80
-2
- 80
50 70
40 -
-2
60 -
- 10
-8
- 13
-
15
150
-
-
-
-
-
-
-
mV
mV
mV
mA
mA
kΩ
dB
MHz
MHz
V/µs
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Jun., 2013
5
www.anpec.com.tw
5 Page 
APW7276
Block Diagram
REF
FB
VIN
VIN
UVLO
REF
COMP
Q4
Logic
Control
EAMP
Slope
Compensation
1.5MHz
Oscill-
ator
REF
OK
OTP
BSW
LX
5µA
PWM
Logic
Control
Gate
Driver
Q1
Current
Sense
Amplifier
Current
Limit
Comparator
Current REF
Q2
FB
GND
VS
EN
POS
VCOM
CDLY
PS
Shutdown
and
Soft-start
Control
SUP
VGL
Soft-start
1V
Q5
FBOK 10µA
Shutdown
Q3
15ms
Delay
FBOK
EN
VGH
Logic
Control
VGL
Logic
Control
SUP
P1
DRVP
N1
REF
SUP
FBP
P2
DRVN
N2
FBN
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Jun., 2013
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet APW7276.PDF ] | |
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