AAT1102 Datasheet, PDF (1/18 Pages) Advanced Analog Technology, Inc. – ADVANCED PWM DC-DC CONVERTER WITH INTERNAL SWITCH AND SOFT-START

Advanced Analog Technology, Inc.
AAT1102
Product information presented is current as of publication date. Details are subject to change without notice
ADVANCED PWM DC-DC CONVERTER WITH
INTERNAL SWITCH AND SOFT-START
FEATURES
1.6A, 0.23Ω, Internal Switch
High Efficiency: 90%
Adjustable Output: V_DD to 12.5V
Adjustable Frequency: 640kHz or 1.3MHz
Wide Input Range: +2.6V to +5.5V
Low Shutdown Current: 0.1µA
Programmable Soft-Start
Small 8-Pin MSOP Package
PIN CONFIGURATION
TOP VIEW
EO 1
8 SS
IN 2
SHDN 3
AAT1102
7 FREQ
6 V_DD
GND 4
5 SW
8-Pin MSOP
GENERAL DESCRIPTION
The AAT1102 is a step-up DC-DC converter with
a 1.6A, 0.23Ω internal switch. Equipped with an
external compensation pin, this device offers user
flexibility in determining loop dynamic and
adjusting operating frequency. AAT1102 also
allows the use of small, low equivalent resistance
(ESR) ceramic output capacitor, and it’s capable
of converting a standard input of 3.3V to multiple
outputs of 8V, − 8V , and 23V. Furthermore,
filtering and loop performance are facilitated and
enhanced by a high switching frequency of either
640 kHz or1.3MHz.
The AAT1102’s versatility comes with a
power-smart design. A soft-start programmed
with an external capacitor that sets the input
current ramp rate, reduces the current
consumption to 0.1µA in shutdown mode. When
operating, a mere 2.6V input yields an impressive
output voltage as high as 12.5V.
High switching frequency and economical design
allow AAT1102 to be less than 1.1mm high. Its
compact 8-pin MSOP package and superior
performance make it an ideal part for biasing TFT
displays.
؀ –᨜ᣊֺઝैݾٝૻڶֆ– ׹
– Advanced Analog Technology, Inc. –
Page 1 of 18
V4.0