AAT1230-1 반도체 회로 부품 판매점
18V 100mA Step-Up Converter
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 Advanced Analogic Technologies |
General Description
The AAT1230/1230-1 is a high frequency, high effi-
ciency boost converter capable of 18V maximum
output voltage. The internal power switch can deliv-
er 100mA load current. It is the ideal power solution
to power OLED, LCD, and CCD applications oper-
ating from a single cell lithium-ion battery.
Hysteretic control provides up to 2MHz switching
frequency and fast response to load transients with
small, low-cost external components. The fully
integrated control IC simplifies the design while
reducing the total PCB footprint. The
AAT1230/1230-1 offers a true load disconnect fea-
ture which isolates the load from the power source
when EN/SET is pulled low. This eliminates leak-
age current and maintains zero voltage at the out-
put while disabled.
The output voltage can be dynamically set by acti-
vating one of two reference levels (FB1 or FB2)
through the SEL logic pin. Optionally, AnalogicTech’s
Simple Serial Control™ (S2Cwire™) single wire
interface provides dynamic programmability across
a wide output voltage range through the EN/SET pin.
The AAT1230/1230-1 are available in a Pb-free,
thermally-enhanced 16-pin 3x4mm TDFN low-pro-
file package or a Pb-free 12-pin TSOPJW package.
Typical Application
VBAT
3.6V
Enable/Set
Select
C1
2.2µF
VP
VIN LIN
AAT1230/
AAT1230-1
SW
PGND
FB1
EN/SET
FB2
SEL GND
AAT1230/1230-1
18V 100mA Step-Up Converter
Features
SwitchReg™
• VIN Range: 2.7V to 5.5V
• Maximum Output: 18V @ 100mA
• True Load Disconnect
• Dynamic Voltage Control Options
• Hysteretic Control
— No External Compensation Components
— Excellent Load Transient Response
— High Efficiency at Light Load
• Up to 2MHz Switching Frequency
• Ultra-Small Inductor and Capacitors
• Integrated Low RDS(ON) MOSFET Switches
• Up to 85% Efficiency
• <1µA Shutdown Current
• Integrated Soft Start
• Two Turn-On Time Options
— AAT1230: TSS = 0.35ms
— AAT1230-1: TSS = 3.5ms
• Cycle-by-Cycle Current Limit
• Short-Circuit, Over-Temperature Protection
• Available in TSOPJW-12 or TDFN34-16
Package
• -40°C to +85°C Temperature Range
Applications
• CCD Bias Circuit
• Digital Still Cameras
• LCD Bias Circuit
• Mobile Handsets
• MP3 Players
• OLED Displays
• PDAs and Notebook PCs
L1
2.2µH
D1
Schottky 18V @ 100mA
R1
78.7kΩ
R2
562Ω
R3
4.99kΩ
C2
2.2µF, 25V
1230.2006.10.1.4
1
www.DataSheet.in
AAT1230/1230-1
18V 100mA Step-Up Converter
Pin Descriptions
Pin #
TSOPJW-12 TDFN34-16
1 15, 16
2 14
3 13
4 12
5 11
6, 7 9, 10
8 6, 7, 8
95
10 4
11 3
12 1, 2
N/A EP
Symbol
VP
EN/SET
SEL
VIN
N/C
SW
PGND
GND
FB2
FB1
LIN
Function
Input power pin; connected to the source of the P-channel MOSFET.
Connect to the input capacitor(s).
IC active high enable pin. Alternately, input pin for S2Cwire control uti-
lizing FB2 reference.
Logic high selects FB1 high output reference; logic low selects FB2 low
output reference. Pull low for S2Cwire control.
Input voltage for the converter. Connect this pin directly to the VP pin.
No connection.
Boost converter switching node. Connect the power inductor between
this pin and LIN pin.
Power ground for the boost converter; connected to the source of the
N-channel MOSFET. Connect to the input and output capacitor return.
Ground pin.
Feedback pin for low output voltage set point. Pin set to 0.6V when
SEL is low and disabled when SEL is high. Voltage is set from 0.6V to
1.2V with S2Cwire control.
Feedback pin for high output voltage set point. Pin set to 1.2V when
SEL is high and disabled when SEL is low. Disabled with S2Cwire
control.
Switched power input. Connected to the power inductor.
Exposed paddle (bottom). Tied to SW pins. May be connected to SW
pins or left floating.
Pin Configuration
TSOPJW-12
(Top View)
VP
EN/SET
SEL
VIN
N/C
SW
1
2
3
4
5
6
12 LIN
11 FB1
10 FB2
9 GND
8 PGND
7 SW
TDFN34-16
(Top View)
LIN
LIN
FB1
FB2
GND
PGND
PGND
PGND
1
2
3
4
5
6
7
8
16 VP
15 VP
14 EN/SET
13 SEL
12 VIN
11 N/C
10 SW
9 SW
2
www.DataSheet.in
1230.2006.10.1.4
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제조업체: Advanced Analogic Technologies
( aat )
AAT1230-1 converter
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[ AAT1230-1.PDF ]
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