T
echcode
®
High Efficiency 1MHz, 2A Step Up Regulator
Features
DATASHEET
TD8208
General Description
TD8208 is a high efficiency, current‐mode control Boost DC to
DC regulator with an integrated 120mΩ R
DS(ON)
N‐channel
MOSFET. The fixed 1MHz switching frequency and internal
compensation reduce external component count and save
the PCB space. The build‐in internal soft start circuitry
minimizes the inrush current at start‐up.
Wide input range:2.7‐6V
1MHz switching frequency
Minimum on time: 100ns typical
Minimum off time: 100ns typical
Max output voltage: 6V
Low R
DS(0N)
: 120mΩ
RoHS Compliant and Halogen Free
Compact package: SOT23‐6
Applications
Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera
Package Types
SOT23‐6
Figure 1. Package Types of TD8208
October, 20, 2011.
Techcode Semiconductor Limited
www.techcodesemi.com
1
T
echcode
®
High Efficiency 1MHz, 2A Step Up Regulator
DATASHEET
TD8208
Pin Configurations
Figure 2 Pin Configuration of TD8208(Top View)
Pin Description
Pin Number
Pin Name
Description
1
2
3
4
5
6
LX
GDN
FB
EN
IN
NC
Inductor node. Connect an inductor between IN pin and LX pin.
GND
Feedback pin. Connect a resistor R1 between VOUT
and FB, and a resistor R2 between
FB and GND to program the output voltage: VOUT=0.6V*(R1/R2+1)
Enable control. High to turn on the part. Don’t leave it floated.
Power Input pin.
Ordering Information
TD8208
□
Circuit Type
Packing:
Blank：Tube
R:Type and Reel
T: SOT23-6
□
October, 20, 2011.
Techcode Semiconductor Limited
www.techcodesemi.com
2
T
echcode
®
High Efficiency 1MHz, 2A Step Up Regulator
DATASHEET
TD8208
Function Block
Figure 3 Function Block Diagram of TD8208
October, 20, 2011.
Techcode Semiconductor Limited
www.techcodesemi.com
3
T
echcode
®
High Efficiency 1MHz, 2A Step Up Regulator
DATASHEET
TD8208
Absolute Maximum Ratings
EN, VDD, LX‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐7V
FB‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐3.6V
Power Dissipation, P
D
@ T
A
= 25°C, SOT23‐6 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 0.6W
Package Thermal Resistance (Note 2)
SOT23‐6, θ
JA
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 200°C/W
SOT23‐6, θ
JC
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 130°C/W
Junction Temperature Range ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 125°C
Lead Temperature (Soldering, 10 sec.) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 260°C
Storage Temperature Range ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
‐
65°C to 150°C
Recommended Operating Conditions
VDD pin‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 2.7V to 6V
FB‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 0V to 1V
Junction Temperature Range ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ ‐40°C to 125°C
Ambient Temperature Range ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
‐
40°C to 85°C
October, 20, 2011.
Techcode Semiconductor Limited
www.techcodesemi.com
4
T
echcode
®
High Efficiency 1MHz, 2A Step Up Regulator
(V
IN
= 3.3V, V
OUT
=5V, I
OUT
=100mA, T
A
= 25°C unless otherwise specified)
DATASHEET
TD8208
Electrical Characteristics
Parameters
Input Voltage Range
Quiescent Current
Low Side Main FET
Main FET Current
Switching Frequency
Feedback Reference
IN UVLO Rising
Thermal Shutdown
Symbol
V
IN
I
Q
Rds(on)
I
LIM1
Fsw
V
REF
V
IN,UVLO
T
SD
Test Condition
Min.
2.7
Typ.
Max.
6
V
Unit
V
FB
=0.66V
200
120
3
0.8
0.588
1.2
0.612
2.5
µ
A
mΩ
A
MHz
V
V
°C
1
0.6
150
October, 20, 2011.
Techcode Semiconductor Limited
www.techcodesemi.com
5
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