tm
TE
CH
T6330A
1A Low Dropout Voltage Regulator
FEATURES
• Wide Input Range: 2.5V to 5.5V
• Available Output Voltages:
1.5/1.8/2.0/2.5/2.8/3.0/3.3/3.7V
• Low-Noise for RF Application
• Quick Start-Up (Typically 50us)
• Fast Response in Line/Load Transient
• Standby Current : <0.01uA
• TTL-Logic-Controlled Shutdown Input
• Low Temperature Coefficient
• Current Limiting Protection
• Thermal Shutdown Protection
• High Power Supply Rejection Ratio
• Only 1uF Output Capacitor Required for
Stability
• Available Package (Lead-Free) :
SOT-223, TO-252, TO-263
GENERAL DESCRIPTION
The T6330A is designed for portable RF and
wireless
applications
with
demanding
performance and space requirements. The
T6330A performance is optimized for battery-
powered systems to deliver ultra low noise and
low quiescent current. Regulator ground
current increases only slightly in dropout,
further prolonging the battery life. The
T6330A also works with small output
capacitor, reducing the amount of board space
necessary for power applications, critical in
hand-held wireless devices. The T6330A
consumes less than 0.01uA in shutdown mode
and has fast turn-on time less than 50us. The
other features include ultra low dropout
voltage, high output accuracy, current limiting
protection, and high ripple rejection ratio.
Available in the SOT-223, TO-252 and TO -
263 packages.
PART NUMBER EXAMPLES
T6330A-18AXG
a
b
c
d
APPLICATIONS
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances
a : Device Number
b : Output Voltage
15=1.5V, 18=1.8V, 20=2.0V, 25=2.5V
28=2.8V, 30=3.0V, 33=3.3V, 37=3.7V
c : Pin-out / function and Package
AX=SOT-223(A), BX=SOT-223(B),
CX=SOT-223(C), DX=SOT-223(D),
AW=TO-252(A), BW=TO-252(B),
CW=TO-263(A), DW=TO-263(B),
EW=TO-263(C)
d : G=lead-free
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 1
Publication Date: JAN. 2008
Revision: A
tm
TE
CH
T6330A
PIN ARRANGEMENT (Top view)
SOT-223
T6330A-XXXXG
TO-252
T6330A-XXXWG
SOT-263
T6330A-XXXWG
1
2
3
1
2 3
1
2
3
Parts. number
T6330A-XXAXG
T6330A-XXBXG
T6330A-XXCXG
T6330A-XXDXG
T6330A-XXAWG
T6330A-XXBWG
T6330A-XXCWG
T6330A-XXDWG
T6330A-XXEWG
package
SOT-223(A)
SOT-223(B)
SOT-223(C)
SOT-223(D)
TO-252(A)
TO-252(B)
TO-263(A)
TO-263(B)
TO-263(C)
1
OUT
GND
GND
IN
GND
IN
GND
GND
IN
Pin out
2
GND
OUT
IN
GND
OUT
GND
OUT
IN
GND
3
IN
IN
OUT
OUT
IN
OUT
IN
OUT
OUT
PIN DESCRIPTION
SYMBOL
OUT
GND
IN
Voltage output
Ground pin
Input supply pin.
DESCRIPTION
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 2
Publication Date: JAN. 2008
Revision: A
tm
TE
CH
T6330A
Absolute Maximum Ratings
Supply Voltage …………………………………………………………. -0.3V to 6V
EN Pin Input Voltage …………………………………………………… -0.3V to 6V
Operating Juction Temperature ………………………………………… -55°C to +150°C
Operating temperature range …………………………………………… -40°C to +125°C
Storage temperature range ……………………………………………… -65°C to +150°C
Lead temperature (soldering, 10sec) …………………………………… 260°C
Power Dissipation, PD @ TA = 25°C :
SOT-223………….………………………………………………………1.8W
TO-252 ………………………………………………………………….2.0W
TO-263 ………………………………………………………….………2.2W
Package Thermal Resistance :
SOT-223
θJA
……………………………………… …………80°C/W
TO-252
θJA
………………………………………………….70°C/W
TO-263
θJA
………………………………………………….65°C/W
ESD Susceptibility
HBM (Human Body Mode) …………………………………………………2KV
MM (Machine Mode) …………………………………………………… …200V
Electrical Characteristics
( V
IN
=
V
OUT
+ 1V
,
T
A
= 25°C, C
IN
= C
OUT
= 10uF, unless otherwise noted )
Symbol
V
IN
I
OUT
I
LIM
I
Q
Description
Input Voltage
Conditions
Min. Typ. Max
2.5
-
-
1
1.2
35
3
10
70
350
0.01
0
-
-
-60
-30
165
30
5.5
+2
-
-
50
10
30
100
550
1
100
-
0.4
-
-
-
-
-2
-
-
-
-
-
-
-
-
-
1.2
-
f =100Hz
f =10KHz
-
-
-
-
Unit
V
%
A
A
uA
mV
mV
mV
mV
mV
uA
nA
V
V
dB
°C
°C
∆V
OUT
Output Voltage Accuracy
Output current
Current Limit
Quiescent Current
I
OUT
=1mA
R
Load
=1 ohm
EN≥ 1.2V,
I
OUT
=0mA
V
IN
= V
OUT
+1V to 5.5V, I
OUT
=1mA
0.1mA<
I
OUT
< 500mA
I
L
=100mA
I
L
=500mA
I
L
=1.0A
EN = V
IN
EN = V
IN
or GND
∆V
LINE
Line Regulation
∆V
LOAD
Load Regulation
V
DROP
Dropout Voltage
I
SHDN
Shutdown current
I
IBEN
EN Input Bias Current
V
ENH
EN Input High Voltage
V
ENL
EN Input Low Voltage
800 1000
P
SRR
Power Supply Rejection Rate C
OUT
=10uF,
I
OUT
=100mA
T
SD
∆T
SD
Thermal
Shutdown
Temperature
Thermal
Shutdown
Temperature Hysteresis
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 3
Publication Date: JAN. 2008
Revision: A
tm
TE
CH
T6330A
Applications Information
Like any voltage regulator, the external capacitors used for the T6330A must be carefully selected
for regulator stability and performance. Using a capacitor whose value is > 10uF on the T6330A
input and the amount of capacitance can be increased without limit. The input capacitor must be
located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean
analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor
with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-
transient response.
The output capacitor must meet both requirements for minimum amount of capacitance and ESR in
all voltage regulator application. The T6330A is designed specifically to work with low ESR
ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor
whose value is at least 10uF with ESR is more than 20mΩ on the T6330A output ensures stability.
The T6330A still works well with output capacitor of other types due to the wide stable ESR range.
Output capacitor of larger capacitance can reduce noise and improve load transient response,
stability and PSRR.The output capacitor should be located with in 0.5 inch from the VOUT pin of
the T6330A and returned to a clean analog ground.
Enable Function
The T6330A features an voltage regulator enable/disable function. To assure the T6330A voltage
regulator will switch on, the EN turn on control level must be greater than 1.2V. The T6330A
voltage regulator will go into shutdown mode when the voltage on the EN pin falls below 0.4V. The
T6330A equips a quick-discharge function to protect the system. When the regulator is turned off
by EN pin, the internal MOSFET between VOUT and GND will be turned on to discharge output
voltage quickly. If the enable function is not needed in a specific application, it may be tied to
GND/VIN to keep the voltage regulator in a continuously on state.
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 4
Publication Date: JAN. 2008
Revision: A
tm
TE
CH
T6330A
Thermal Considerations
Thermal protection limits power dissipation in T6330A. When the operating junction temperature
exceeds 165
°C
, the OTP circuit starts the thermal shutdown function and turns the pass element off.
The pass element turns on again after the junction temperature cools by 30
°C
. For continuous
operation, do not exceed absolute maximum operatiog junction temperature 125
°C
. The power
dissipation definition in device is shown as following formula :
P
D
= (V
IN
- V
OUT
) x I
OUT
+ V
IN
x I
Q
The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the
rate of surroundings airflow and temperature difference between junction to ambient. The
maximum power dissipation can be calculated by following formula :
P
D(MAX)
= ( T
J(MAX)
- TA ) /
θ
JA
Where T
J(MAX)
is the maximum operating junction temperature 125
°C
, T
A
is the ambient
temperature and the
θ
JA
is the junction to ambient thermal resistance. For recommended operating
conditions specification of T6330A, where T
J(MAX)
is the maximum junction temperature of the die
(125
°C
) and T
A
is the maximum ambient temperature.
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 5
Publication Date: JAN. 2008
Revision: A
