TMT T6328A

tm
TE
CH
T6328A
500mA Low Dropout Voltage Regulator
FEATURES
• Wide Input Range: 2.5V to 5.5V
• Available Output Voltages:
1.5V / 1.8V / 2.0V / 2.5V / 2.8V / 3.0V
/ 3.3V / 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-23-3, SOT-23-5, SOT-223, SOT-89,
SC-82
APPLICATIONS
• CDMA/GSM Cellular Handsets
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• PCMCIA Cards
• Portable Information Appliances
TM Technology Inc. reserves the right
to change products or specifications without notice.
GENERAL DESCRIPTION
The T6328A is designed for portable RF and
wireless
applications
with
demanding
performance and space requirements. The
T6328A performance is optimized for batterypowered systems to deliver ultra low noise and
low quiescent current. Regulator ground
current increases only slightly in dropout,
further prolonging the battery life. The
T6328A also works with low-ESR ceramic
capacitors, reducing the amount of board space
necessary for power applications, critical in
hand-held wireless devices. The T6328A
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-23-3, SOT-23-5, SOT223, SC-82 and SOT -89 packages.
PART NUMBER EXAMPLES
T 6 3 2 8 A -1 8 A X G
a
b
c
d
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-23-5(A), BX=SOT-23-5(B),
CX=SOT-23-3(A),
DX=SOT-89(A), EX=SOT-89(B),
FX=SOT223(A),
AU=SC-82(A)
d : G=lead-free
P. 1
Publication Date: OCT. 2007
Revision: A
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TE
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T6328A
PIN ARRANGEMENT (Top view)
SOT23-5(A)
T6328A-XXAXG
VIN
1
GND
2
EN
3
5
SOT23-5(B)
T6328A-XXBXG
VOUT
4
NC
SOT-89(A)
T6328A-XXDXG
1
NC
2
GND
3
5
VIN
GND
1
3
4
VOUT
SOT-89(B)
T6328A-XXEXG
GND
V IN
1
2
3
VIN
3
SOT-223(A)
T6328A-XXFXG
GND
2
VIN
2
VOUT
VOUT
1
V OUT
3
V OUT
GND
2
V IN
1
EN
SOT23-3(A)
T6328A-XXCXG
SC-82(A)
T6328A-XXAUG
EN
1
4
VIN
GND
2
3
VOUT
PIN DESCRIPTION
SYMBOL
VOUT
GND
EN
VIN
NC
DESCRIPTION
Voltage output
Ground pin
Enable signal, high active
Input supply pin.
No connect
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 2
Publication Date: OCT. 2007
Revision: A
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T6328A
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-23-3/SOT-23-5………………………………………………………400mW
SC-82 …………………………………………………………………… 300mW
SOT-89 / SOT-223 ………………………………………………………500mW
Package Thermal Resistance :
SOT-23-3/SOT-23-5, θJA ……………………………………… …………250°C/W
SC-82, θJA …………………………………………………… ……………333°C/W
SOT-89 /SOT-223, θJA …………………………………………………… 200°C/W
ESD Susceptibility
HBM (Human Body Mode) …………………………………………………2KV
MM (Machine Mode) …………………………………………………… …200V
Electrical Characteristics
( VIN = VOUT + 1V, TA = 25°C, CIN = COUT = 1uF, unless otherwise noted )
Symbol
VIN
Description
Conditions
Min. Typ. Max
Input Voltage
∆VOUT Output Voltage Accuracy
IOUT
Output current
ILIM
Current Limit
IOUT=1mA
Unit
2.5
-
5.5
V
-2
-
+2
%
-
500
-
mA
RLoad =1 ohm
EN≥ 1.2V, IOUT=0mA
-
600
-
mA
-
65
90
uA
∆VLINE Line Regulation
VIN= VOUT +1V to 5.5V, IOUT =1mA
-
3
10
mV
∆VLOAD Load Regulation
0.1mA< IOUT < 500mA
-
10
30
mV
VOUT=3.0~3.9V
-
650
850
mV
VOUT=2.5~2.9V
-
780
980
mV
VOUT=2.0~2.4V
-
1100 1300
mV
VOUT=1.4~1.9V
-
1400 1600
mV
IQ
Quiescent Current
VDROP Dropout Voltage
IL=500mA
ISHDN Shutdown current
EN = VIN
-
0.01
1
uA
IIBEN EN Input Bias Current
EN = VIN or GND
-
0
100
nA
VENH EN Input High Voltage
1.2
-
-
V
VENL EN Input Low Voltage
-
-
0.4
V
f =100Hz
-
-60
-
f =10KHz
-
-30
-
-
165
-
°C
-
30
-
°C
PSRR Power Supply Rejection Rate COUT=1uF, IOUT =100mA
TSD
∆TSD
Thermal Shutdown Temperature
Thermal Shutdown Temperature Hysteresis
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 3
dB
Publication Date: OCT. 2007
Revision: A
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T6328A
Applications Information
Like any voltage regulator, the external capacitors used for the T6328A must be carefully selected
for regulator stability and performance. Using a capacitor whose value is > 1uF on the T6328A
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 linetransient response.
The output capacitor must meet both requirements for minimum amount of capacitance and ESR in
all voltage regulator application. The T6328A 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 1uF with ESR is more than 20mΩ on the T6328A output ensures stability.
The T6328A 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 T6328A and returned to a clean analog ground.
Enable Function
The T6328A features an voltage regulator enable/disable function. To assure the T6328A voltage
regulator will switch on, the EN turn on control level must be greater than 1.2V. The T6328A
voltage regulator will go into shutdown mode when the voltage on the EN pin falls below 0.4V. The
T6328A 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: OCT. 2007
Revision: A
tm
TE
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T6328A
Thermal Considerations
Thermal protection limits power dissipation in T6328A. 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 :
PD = (VIN - VOUT) x IOUT + VIN x IQ
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 :
PD(MAX) = ( TJ(MAX) - TA ) / θJA
Where TJ(MAX) is the maximum operating junction temperature 125°C, TA is the ambient
temperature and the θJA is the junction to ambient thermal resistance. For recommended operating
conditions specification of T6328A, where TJ(MAX) is the maximum junction temperature of the die
(125°C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance
θJA is layout dependent) for SOT-23-3/SOT-23-5 package is 250°C/W, SC-82 package is 333°C/W,
SOT-89/ SOT-223 package is 300°C/W on standard JEDEC 51-3 thermal test board. The maximum
power dissipation at TA = 25°C can be calculated by following formula :
PD(MAX) = (125°C - 25°C)/250 = 400mW (SOT-23-3/SOT-23-5)
PD(MAX) = (125°C - 25°C)/333 = 300mW (SC-82)
PD(MAX) = (125°C - 25°C)/200 = 500mW (SOT-89/ SOT-223)
The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and
thermal resistance θJA For T6328A packages.
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 5
Publication Date: OCT. 2007
Revision: A
tm
TE
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T6328A
PACKAGE DIMENSIONS
SOT-23-3
B
B1
B2
A1 A
C1
C
C2
F
D
I
Symbol
A
A1
B
B1
B2
C
C1
C2
D
E
F
G
H
I
Min.
2.60
1.40
2.70
0.95
0.90
0
0.30
0.08
Dimension in mm
Typ.
2.80
1.575
2.85
1.90(BSC)
0.95(BSC)
1.20
1.10
0.075
0.40
0.45
0.15
0.60(REF)
0~8°
5~15°
G
H
E
Max.
3.00
1.60
3.00
Min.
0.102
0.055
0.106
1.45
1.30
0.150
0.037
0.035
0
0.60
0.22
0.012
0.003
TM Technology Inc. reserves the right
to change products or specifications without notice.
Dimension in inch
Typ.
0.110
0.062
0.112
0.075(BSC)
0.037(BSC)
0.047
0.043
0.003
0.015
0.018
0.006
0.023(REF)
0~8°
5~15°
P. 6
Max.
0.118
0.063
0.118
0.057
0.051
0.06
0.023
0.009
Publication Date: OCT. 2007
Revision: A
tm
TE
CH
T6328A
PACKAGE DIMENSIONS
SOT-23-5
B
B 1
B 2
A 1
C 1
A
C
C 2
F
D
I
Symbol
A
A1
B
B1
B2
C
C1
C2
D
E
F
G
H
I
Min.
2.60
1.40
2.70
0.95
0.90
0
0.30
0.08
Dimension in mm
Typ.
2.80
1.575
2.85
1.90(BSC)
0.95(BSC)
1.20
1.10
0.075
0.40
0.45
0.15
0.60(REF)
0~8°
5~15°
G
H
Max.
3.00
1.60
3.00
Min.
0.102
0.055
0.106
1.45
1.30
0.150
0.037
0.035
0
0.60
0.22
0.012
0.003
TM Technology Inc. reserves the right
to change products or specifications without notice.
Dimension in inch
Typ.
0.110
0.062
0.112
0.075(BSC)
0.037(BSC)
0.047
0.043
0.003
0.015
0.018
0.006
0.023(REF)
0~8°
5~15°
P. 7
E
Max.
0.118
0.063
0.118
0.057
0.051
0.06
0.023
0.009
Publication Date: OCT. 2007
Revision: A
tm
TE
CH
T6328A
PACKAGE DIMENSIONS
SC-82
B
B 1
A 1
D
A
D 1
C 1
C
C 2
F
Symbol
A
A1
B
B1
C
C1
C2
D
D1
E
F
G
H
I
G
H
I
Min.
1.80
1.15
1.80
0.80
0.80
0.00
0.15
0.35
0.20
0.08
Dimension in mm
Typ.
1.30(BSC)
0.65(REF)
0~8°
5~15°
Max.
2.45
1.35
2.20
Min.
0.071
0.045
0.071
1.10
1.00
0.10
0.40
0.50
0.46
0.26
0.031
0.031
0.000
0.006
0.014
0.008
0.003
TM Technology Inc. reserves the right
to change products or specifications without notice.
Dimension in inch
Typ.
0.051(BSC)
0.025(REF)
0~8°
5~15°
P. 8
E
Max.
0.096
0.053
0.087
0.043
0.039
0.004
0.016
0.020
0.018
0.010
Publication Date: OCT. 2007
Revision: A
tm
TE
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T6328A
PACKAGE DIMENSIONS
SOT-89
D
POLISHED(2X)
D1
E
B1
1
3
2
H
L
C
B
10'(2X)
A
e
e1
Symbol
A
B
B1
C
D
D1
E
H
e
e1
L
Dimension in mm
Min.
Max.
1.40
1.60
0.44
0.56
0.36
0.48
0.35
0.44
4.40
4.60
1.35
1.83
2.29
2.60
3.94
4.25
1.50 BSC
3.00 BSC
0.89
1.2
Dimension in inch
Min.
Max.
0.055
0.063
0.017
0.022
0.014
0.019
0.013
0.017
0.173
0.181
0.053
0.072
0.090
0.102
0.155
0.167
0.059 BSC
0.118 BSC
0.035
0.047
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 9
Publication Date: OCT. 2007
Revision: A
tm
TE
CH
T6328A
PACKAGE DIMENSIONS
SOT-223
B
B1
A1 A
e
e1
C1
C
F
C2
H
D
Symbol
A
A1
B
B1
C
C1
C2
D
E
e
e1
F
H
Min.
6.70
3.30
6.30
2.90
1.50
0.02
0.66
0.75
0.23
Dimension in mm
Typ.
7.00
3.50
6.50
3.00
1.60
0.70
2.30
4.6
0.30
0~10°
Max.
7.30
3.70
6.70
3.10
1.80
1.70
0.10
0.84
0.35
E
Min.
0.263
0.129
0.248
0.114
0.059
0.001
0.025
0.029
0.009
TM Technology Inc. reserves the right
to change products or specifications without notice.
Dimension in inch
Typ.
0.275
0.137
0.255
0.118
0.062
0.027
0.090
0.181
0.011
0~10°
P. 10
Max.
0.287
0.145
0.263
0.122
0.70
0.066
0.003
0.033
0.013
Publication Date: OCT. 2007
Revision: A