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Techcode®
High Efficiency 1.5MHz, Step Up Regulator
DATASHEET
TD8210
General Description
Features
The TD8210 is a fixed switching frequency (1.5MHz typical),
Wide 2.7V to 6V Input Voltage Range
current-mode, step-up regulator with an integrated N-channel
Built-in 0.2Ω N-Channel MOSFET
MOSFET. The device allows the usage of small inductors and
Built-in Soft-Start
output capacitors for portable devices. The current-mode control High Efficiency up to 90%
scheme provides fast transient response and good output voltage <1mA Quiescent Current During Shutdown
accuracy.
Current-Mode Operation
The TD8210 includes under-voltage lockout, currentlimit,and
Stable with Ceramic Output Capacitors
over-temperature shutdown preventing damage in the event of an Fast Transient Response
output overload.
Current-Limit Protection
Over-Temperature Protection with Hysteresis
Available in a SOT-23-5A and TDFN2x2-6 Package
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera
Boost Regulators
Package Types
October, 20, 2011.
SOT23-5
Figure 1. Package Types of TD8210
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Techcode®
High Efficiency 1.5MHz, Step Up Regulator
Pin Configurations
DATASHEET
TD8210
Pin Description
Figure 2 Pin Configuration of TD8210(Top View)
Pin Number Pin Name Description
1 LX
Switch pin. Connect this pin to inductor/diode here.
2
GDN
GND
3 FB
Feedback Input. The device senses feedback voltage via FB and regulate the voltage at
1.23V. Connecting FB wi th a resistor-divider from the output that sets the output voltage.
Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin
4 EN
below 0.4V to shut it down. In shutdown, all functions are disabled to decrease the supply
current below 1A. Do not left this pin floating.
5 IN
Main Supply Pin. Must be closely decoupled to GND with a 2.2F or greater ceramic
capacitor.
Ordering Information
TD8210 □ □
Circuit Type
T:
SOT23-5
Packing:
BlankTube
R:Type and Reel
October, 20, 2011.
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Techcode®
High Efficiency 1.5MHz, Step Up Regulator
Function Block
DATASHEET
TD8210
Figure 3 Function Block Diagram of TD8210
October, 20, 2011.
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Techcode®
High Efficiency 1.5MHz, Step Up Regulator
Absolute Maximum Ratings
DATASHEET
TD8210
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability
Recommended Operating Conditions
Thermal Characteristics
Symbol
Parameter
θ JA
Junction-to-Ambient Resistance in Free Air
θ JC
Junction-to-Case Resistance
Typical Value
220
120
Unit
oC/W
oC/W
October, 20, 2011.
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Techcode®
High Efficiency 1.5MHz, Step Up Regulator
Electrical Characteristics
DATASHEET
TD8210
Symbol Parameter
VIN
IDD1
IDD2
ISD
VREF
Input Voltage
Input DC Bias Current
UVLO Threshold Voltage
UVLO Hysteresis Voltage
Regulated Feedback Voltage
IFB
FSW
RON
ILIM
DMAX
TSS
VTEN
ILEN
TOTP
FB Input Current
Switching Frequency
Power Switch On Resistance
Power Switch Current Limit
LX Leakage Current
LX Maximum Duty Cycle
Soft-Start Duration
EN Voltage Threshold
EN Voltage Hysteresis
EN Leakage Current
Over-Temperature Protection
Over-Temperature Protection
Test Conditions
TA=-40~85oC TJ=-40~120 oC
VFB=1.3V,no switching
VFB=1.1V, switching
EN=GND
VIN Rising
VIN Falling
VIN=2.7V~6V, TA = 25 oC
VIN=2.7V~6V, TA = -40 ~ 85 oC
VEN = 0V, VLX = 0V or 6V, VIN = 6V
VEN Rising
VEN=5V, VIN = 5V
TJ Rising
TJ Falling
TD8210
Min. Typ.
2.7
- 300
-
-
2.0
50
1.212
1.205
-50
1.25
2.2
-1
92
0.4
-1
2
-
2.2
100
1.23
1.5
0.2
95
2
0.7
0.1
150
40
Max.
6
-
5
1
2.4
150
1.248
1.255
50
1.75
1
98
3
1
1
Unit
V
uA
mA
µA
V
mV
V
nA
MHz
A
uA
%
ms
V
V
uA
oC
oC
October, 20, 2011.
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