SEAWARD
ELECTRONICS
150mA CMOS LDO
Regulator
(Preliminary)
Features
SE5166
Description
The SE5166 series of fixed output low dropout
linear regulators are designed for portable battery
powered applications, which require low dropout
voltage and low ground current.
Each device
contains a voltage reference unit, an error amplifier,
a PMOS power transistor, and resistors for setting
output voltage, and current limit and temperature
limit protection circuits.
The SE5166 has been designed to be used
with low cost capacitors and requires a minimum
output capacitor of 1.0µF. Standard voltage versions
are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.
Typical Low Dropout Voltage of 203mV at
75mA.
Guaranteed 150mA output over the full
operating temperature range.
Excellent Line and Load Regulation.
High Accuracy Output Voltage of 2%.
Typical Low Ground Current at 1mA
Current Limiting and Thermal Protection.
Standard SOT-23-3L, TO-92, and SOT-323-3L
Package.
Applications
Cellphones.
Wireless LAN’s.
Hand-Held Instrumentation.
Portable Video Game Devices.
Digital Cameras.
Marking Information
SE5166AHN
YYWW
SE5166BHN
YYWW
SE5166CHN
YYWW
SE5166DHN
YYWW
SE5166EHN
YYWW
SE5166FHN
YYWW
SE5166AHG
YYWW
SE5166BHG
YYWW
SE5166CHG
YYWW
SE5166DHG
YYWW
SE5166EHG
YYWW
SE5166FHG
YYWW
Ordering/Marking Information
Package
Ordering Information
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
SE5166AHN
SE5166BHN
SE5166CHN
SE5166DHN
SE5166EHN
SE5166FHN
SE5166AHG
SE5166BHG
SE5166CHG
SE5166DHG
SE5166EHG
SE5166FHG
YY: year code
WW: week code.
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 1
SEAWARD
ELECTRONICS
150mA CMOS LDO
Regulator
(Preliminary)
SE5166
Ordering/Marking Information (Continued)
Package
Ordering Information
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
SE5166ALN
SE5166BLN
SE5166CLN
SE5166DLN
SE5166ELN
SE5166FLN
SE5166ALG
SE5166BLG
SE5166CLG
SE5166DLG
SE5166ELG
SE5166FLG
SE5166APN
SE5166BPN
SE5166CPN
SE5166DPN
SE5166EPN
SE5166FPN
SE5166APG
SE5166BPG
SE5166CPG
SE5166DPG
SE5166EPG
SE5166FPG
166AN_
166BN_
166CN_
166DN_
166EN_
166FN_
166AG_
166BG_
166CG_
166DG_
166EG_
166FG_
166AN_
166BN_
166CN_
166DN_
166EN_
166FN_
166AG_
166BG_
166CG_
166DG_
166EG_
166FG_
Starting with 1, a bar on top of 1 is
for production year 2001, and
underlined 1 is for year 2002.
The
next character is marked on top for
2003, and underlined for 2004. The
naming pattern continues with
consecutive characters for later
years.
The last character is the week
code. (
A-Z:
Marking Information
1-26, a-z: 27-52)
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 2
SEAWARD
ELECTRONICS
150mA CMOS LDO
Regulator
(Preliminary)
Operating Ratings
(2)
SE5166
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
) ..……...….… 0.7V to +6V
Power Dissipation (P
D
) ……….. Internally Limited
(3)
Supply Input Voltage (V
IN
) ……...... +2.0V to +5.5V
Junction Temperature (T
J
) …….….. 0°C to +125°C
Package Thermal Resistance
160°C/W (TO-92)
230°C/W (SOT-23-3L)
250°C/W (SOT-323-3L)
Junction Temperature (T
J
) ……..... …0°C to +125°C
Lead Temperature (soldering, 5 sec.) …....…. 260°C
Storage Temperature (T
S
) ……….. -40°C to +150°C
Electrical Characteristics
V
IN
= 5V; C
IN
= 2.2µF; C
OUT
= 2.2µF; I
OUT
= 10mA; T
J
= 25°C; unless otherwise noted
Symbol
Parameter
Conditions
SE5166 – 1.5V
SE5166 – 1.8V
SE5166 – 2.5V
SE5166 – 2.8V
SE5166 – 3.0V
SE5166 – 3.3V
V
IN
= V
OUT
+ 1V to 5.5V, I
OUT
= 10mA
V
IN
= 5V; I
OUT
= 10mA to 150mA
Note 4
Min
1.470
1.764
2.450
2.744
2.940
3.234
--
--
Typ
1.5
1.8
2.5
2.8
3.0
3.3
1
1
Max
1.530
1.836
2.550
2.856
3.060
3.366
--
--
Unit
V
V
V
V
V
%
%
V
OUT
Output Voltage
Accuracy
∆V
OUT
∆V
OUT
∆V
OUT
/∆T
Line Regulation
Load Regulation
(5)
Output Voltage
Temperature
Coefficient
--
0.79
--
mV/°C
I
OUT
= 10mA
V
IN
– V
OUT
Dropout Voltage
(6)
I
OUT
= 75mA
I
OUT
= 150mA
T
PROTECTION
PSRR
I
Q
I
LIMIT
Thermal
Protection
Ripple Rejection
Quiescent Current
Current Limit
Thermal Protection Temperature
Protection Hysterisys
f = 120 Hz
I
OUT
= 10mA
--
--
--
--
--
--
--
300
20
203
500
150
20
51
1
--
--
--
--
--
--
--
2
--
°C
dB
mA
mA
mV
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 3
SEAWARD
ELECTRONICS
150mA CMOS LDO
Regulator
(Preliminary)
SE5166
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
Note 3:
The maximum allowable power dissipation at any T
A
(ambient temperature) is calculated using: P
D(MAX)
=
(T
J(MAX)
– T
A
)/Θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature,
and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details
Note 4:
Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range.
Note 5:
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested
for load regulation in the load range from 0.1mA to 150mA.
covered by the thermal regulation specification.
Note 6:
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
nominal value measured at 1V differential.
Changes in output voltage due to heating effects are
Typical Application
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 4
SEAWARD
ELECTRONICS
150mA CMOS LDO
Regulator
(Preliminary)
Thermal Considerations
SE5166
Application Hints
Like any low dropout regulator, SE5166 requires
external capacitors to ensure stability.
ensure performance.
The
external capacitors must be carefully selected to
It is important that the thermal limit of the package is
not exceeded.
protection.
to ground.
The SE5166 has built-in thermal
When the thermal limit is exceeded,
The power dissipation for a given
the IC will enter protection, and V
OUT
will be pulled
application can be calculated as following:
The power dissipation (P
D
) is
P
D
= I
OUT
* [V
IN
– V
OUT
]
The thermal limit of the package is then limited to
P
D(MAX)
= [T
J
– T
A
]/Θ
JA
where T
J
is the junction
temperature, T
A
is the ambient temperature, and
Θ
JA
is around 250°C/W for SE5166.
SE5166 is
designed to enter thermal protection at 150°C. For
example, if T
A
is 25°C then the maximum P
D
is
limited to about 0.5W. In other words, if I
OUT(MAX)
=
150mA, then [V
IN
– V
OUT
] cannot exceed 3.33V.
Input Capacitor
An input capacitor of at least 2.2µF is required.
Ceramic or Tantalum can be used. The value can
be increase without upper limit.
Output Capacitor
An output capacitor is required for stability. It must
be placed no more than 1 cm away from the V
OUT
pin, and connected directly between V
OUT
and GND
pins.
The minimum value is 2.2µF but may be
increase without limit.
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2004. • www.seawardinc.com • Page 5
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