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AAT1109 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1109
기능 ONE-CHANNEL STEP-UP PWM CONTROLLER
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AAT1109 데이터시트, 핀배열, 회로
Advanced Analog Technology, Inc.
Details are subject to change without notice.
AAT1109
ONE-CHANNEL STEP-UP PWM CONTROLLER
FEATURES
www.DataShzeet4UU.cnodmer-Voltage Lockout (UVLO) Protection
z Totem Pole Output
z Output Short Circuit Protection
z Soft-Start Function
z Wide Operating Frequency
10 kHz to 1MHz
z Shutdown Control
z Low Dissipation Current :
Typical 1.6mA in Operation
z SOP-8 & TSSOP-8 Package Available
PIN CONFIGURATION
GENERAL DESCRIPTION
The AAT1109 is a one-channel step-up PWM
controller incorporating a soft-start and a short
circuit protection (SCP) function.
This device consists of an on-chip voltage reference,
error amplifier, pulse width modulation controller,
under-voltage lockout protection, soft-start, and
short circuit protection circuits. Switching
frequency up to 1MHz is set by an external resistor
and capacitor. Soft-start time can be implemented
by the SCP capacitor.
Additionally, a chip-enable feature is also provided
to power down and reduce the current supply
to10µA . With the minimal external components,
the AAT1109 offers a simple and economical
solution.
––
Advanced Analog Technology, Inc.
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AAT1109 pdf, 반도체, 판매, 대치품
Advanced Analog Technology, Inc.
AAT1109
ELECTRICAL CHARACTERISTICS, VDD = 3.3V (UNLESS OTHERWISE
SPECIFIED (SEE NOTE 1)
IDLE PERIOD ADJUSTMENT SECTION
PARAMETER
Maximum Duty Cycle
www.DataSheet4U.com
TEST CONTION
MIN TYP MAX UNIT
t Duty
COSC = 270pF
,
R OSC = 4.2kVOE = 1.12V
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 Gain
VT
VTV
VTT
IB
VOS+
VOS
IOS+
IOS
A VO
TEST CONDITION
VOE = 0.7V
VDD = 2.6 to 6.5V
TC = −20o C to + 85o C
VOE = 0.7V
VOE = 0.7V
MIN TYP MAX UNIT
1.249 1.262 1.275 V
2 8 mV
1%
0.1 1.0 µA
1.4 1.7
V
0.05 0.20
3 20
45 75
mA
µA
70 85
dB
OUTPUT SECTION
PARAMETER
TEST CONDITION
TYP MAX UNIT
High-Level Output Voltage
Low-Level Output Voltage
Rise Time
Fall Time
VOH
VOL
t RISE
t FALL
Io = −30mA
Io = +30mA
CL = 1,000pF
CL = 1,000pF
1.9 2.3
V
0.8 1.2 V
100 ns
100 ns
OPERATING CURRENT
PARAMETER
Supply Current
IDDOFF
I DDON
TEST CONDITION
Output ”OFF” State
R OSC = 4.2k
MIN
TYP MAX UNIT
1.3 mA
1.6 mA
––
Advanced Analog Technology, Inc.
Page 4 of 18
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AAT1109 전자부품, 판매, 대치품
Advanced Analog Technology, Inc.
APPLICATION CIRCUIT 1 BOOST (STEP-UP)
AAT1109
www.DataSheet4U.com
––
Advanced Analog Technology, Inc.
Page 7 of 18
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