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Teilenummer | AAT1109 |
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Beschreibung | ONE-CHANNEL STEP-UP PWM CONTROLLER | |
Hersteller | Advanced Analog Technology | |
Logo | ||
Gesamt 18 Seiten 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.
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– Advanced Analog Technology, Inc. –
Page 1 of 18
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Advanced Analog Technology, Inc.
BLOCK DIAGRAM
AAT1109
www.DataSheet4U.com
CE
C hip Enable
V DD
IREF
GND
LATCH
SCP
C om p.
VREF
1 .2 6 V
SCP
S o ft-S tart
SCP
UVC
UVC
CE
UVLO
CE
OSC
V DD
CE
VREF
V DD
OUT
VREF
1.26 V
PW M
Comp.
CE
DTC
0.765V
UVC
Err-A m p
CE
OSC
OE
V REF
1 .2 6 V
IE
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– Advanced Analog Technology, Inc. –
Page 6 of 18
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6 Page Advanced Analog Technology, Inc.
TAPE AND REEL
8-PIN SOP (CONT.)
AAT1109
www.DataSheet4U.com
NOTE:
1. 10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE ± 0.2 MILLIMETERS.
2. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS
3. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE.
4. A 0 AND B0 ARE MEASURED ON A PLANE 0.3 MILLIMETERS ABOVE THE BOTTOM OF THE POCKET.
5. K 0 IS MEASURED FROM A PLANE ON THE INSIDE BOTTOM OF THE POCKET TO THE TOP SURFACE OF
THE CARRIER.
6. POCKET POSITION RELATIVE TO SPROCKET HOLE IS MEASURED AS TRUE POSITION OF POCKET, NOT
POCKET HOLE.
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– Advanced Analog Technology, Inc. –
Page 12 of 18
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12 Page | ||
Seiten | Gesamt 18 Seiten | |
PDF Download | [ AAT1109 Schematic.PDF ] |
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