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AAT1109A PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1109A
기능 ONE-CHANNEL BOOST SWITCHING REGULATOR
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AAT1109A 데이터시트, 핀배열, 회로
Advanced Analog Technology, Inc.
Preliminary and Provisional
AAT1109A
ONE-CHANNEL BOOST SWITCHING REGULATOR
Features
z Under-voltage lockout protection
z Totem pole output
z Output short circuit protection
z Incorporates soft start function
z Wide operating frequency
10kHz to 1MHz
z Shut down control
z Low dissipation current :
Typical 1.6mA in operation
z Sop-8 & Tssop-8 package available
Pin Configuration
TOP VIEW
-IN 1
SCP 2
Vcc 3
CE 4
8 FB
7 OSC
6 GND
5 OUT
(SOP-8 PACKAGE)
(TSSOP-8 PACKAGE)
General Description
The AAT1109A is a one-channel switching
regulator control IC incorporating a soft start
function and a short circuit protection function.
Each device consists of an on-chip voltage reference,
error amplifier, pulse width modulation controller,
under-voltage protection, soft start and short circuit
protection circuits. Switching frequencies up to
1MHz are set by an external resistor and capacitor.
Soft-start time can be implemented by the SCP
capacitor.
Additionally, a chip enable feature is provided to
power down reducing the supply current to 10uA.
With a minimum number of external components,
the AAT1109A offers a simple and cost effective
solution.
––
Advanced Analog Technology, Inc.
V 0.1




AAT1109A pdf, 반도체, 판매, 대치품
Advanced Analog Technology, Inc.
AAT1109A
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (See Note 1)
Idle period adjustment section
Parameter
Maximum duty cycle
Test Conditions
tDUTY CT = 270pF, R T = 4.2k
Min Typ Max Unit
75 85 93 %
EA (Error Amplifier)
Parameter
Input threshold voltage
VT input stability
VT variation with temperature
Input bias current
Output voltage swing
Output sink current
Output source current
Open-loop voltage
amplification
VT
VTdV
VTdT
IB
VOM+
VOM
I OM +
I OM
A VD
Test Condition
TA = -20 oC to 90 oC
FB=0.7V
FB=0.7V
Output section
Parameter
Test Condition
Min
1.249
1.4
3
-45
70
Typ Max Unit
1.262 1.275 V
2 8 mV
1%
0.1 1 µA
1.7 V
0.05 0.2
20 mA
-75 µA
85 dB
Typ Max Unit
High-level output voltage
Low-level output voltage
Rise time
Fall time
Operating Current
Parameter
Supply current
VOH IO=-30mA
VOL IO=+30mA
Trise CL=1000pF
Tfall CL=1000pF
I DDOFF
I DDON
Test Condition
Output ”OFF”state
RT =4.2k
1.9 2.3
V
0.8 1.2 V
100 nS
100 nS
Min Typ Max Unit
1.3 mA
1.6 mA
––
Advanced Analog Technology, Inc.
V 0.1

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AAT1109A 전자부품, 판매, 대치품
Advanced Analog Technology, Inc.
Application Circuit 1 BOOST(step-up)
AAT1109A
Application Circuit 2 (with charge pump)
41
28
37
56
AAT1109A
41
28
37
56
≅≅
AAT1109A
––
Advanced Analog Technology, Inc.
V 0.1

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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


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