AATIAN35 Datasheet, PDF (1/6 Pages) SiGe Semiconductor, Inc. – 18V/10V 100mA Boost Converter

EV-129
AAT1230 EVAL:
18V/10V 100mA Boost Converter
Introduction
The AAT1230 evaluation board provides a platform for test and evaluation of the AAT1230 switching boost reg-
ulator. The evaluation board demonstrates the suggested size and placement of external components to achieve
output voltages from 10V to 18V and up to 100mA output load. The external components are selected for small
size to suit portable applications, while the layout has been optimized to achieve high efficiency and low output
noise with the TSOPJW-12 package. The AAT1230 operates across an input voltage range from 2.7V to 5.5V.
The AAT1230 evaluation board provides a single 18V output or 10V output at 100mA maximum output cur-
rent. The desired output is determined by the logic level of the SEL pin, which is set by the JP2 jumper set-
ting. Connecting SEL (JP2) to logic high (V_IN) sets the output voltage to 18V while logic low (GND) sets the
output voltage to 10V.
This document provides details on the operation and testing of the AAT1230 evaluation board. Modification
of the resistor divider network (R1, R2, R3) allows outputs from 10V to 18V and up to 100mA.
Operating Specifications, Schematic, and BOM
JP1
3
2
1
Enable
JP2
3
2
1
Select
R4 V_IN
10K
C1
2.2µF
U1 AAT1230
TSOPJW-12
1
2
3
4
5
6
VP
LIN
EN/SET FB1
SEL
FB2
VIN
GND
N/C
PGND
SW
SW
12
11
10
9
8
7
L1
2.2µH
D1
MBR0530
R2
562
R3
4.99K
V_OUT
R1
78.7K
C2
2.2µF
25V
C1 10V 0603 2.2µF
C2 25V 0805 2.2µF
D1 30V 0.5A MBR0530T1 SOD-123
L1 2.2µH SD3814-2R2
R1 78.7k 0603
R2 562 0603
R3 4.99k 0603
R4 10k 0603
Figure 1: AAT1230 Evaluation Board Schematic (AAT1230-DB2).
Specification
Input Voltage
Output Error Voltage
Output Voltage
Output Current
Test Conditions
V_OUT = 10V to 18V; 1% Tolerance R1, R2, R3
EN = V_IN (JP1), SEL = V_IN (JP2)
EN = V_IN (JP1); SEL = GND (JP2)
EN = S²CWire™¹; SEL = GND (JP2)
V_IN = 2.7V to 5.5V
Min Typ
2.7
-4.0
18.0
10.0
10.0
0
Table 1: AAT1230 Evaluation Board Operating Specifications.
Max
5.5
4.0
Units
V
%
V
18.0²
100
mA
1 Contact an AnalogicTech sales representative for information on Simple Serial Control™ (S²Cwire) programming options.
2 Maximum nominal output voltage should be limited to 18V to avoid damaging the AAT1230 device.
EV-129.2006.05.1.2
1