PJ2800 Series
Preliminary
300mA CMOS LDO REGULATORS
T
he PJ2800/A series are highly precise, low power
consumption, positive voltage regulators manufactured
TO-92
PJ2800
Pin 1. In
2. Gnd
3. Out
PJ2800A
Pin 1. Gnd
2. In
3. Out
using CMOS and laser trimming technologies. The series
provides large currents with a significantly small dropout
voltage. The PJ2800/A consists of a current limiter circuit, a
driver transistor, a precision reference voltage and an error
amplifier. Output voltage is selectable in 0.1V steps between
1.5V
to 5.0V, TO-92, SOT-89 and SOT-23 packages are
SOT-89
available.
FEATURES
Input Voltage range is up to 12V
Dropout Voltage :450mV at 300mA output current
Guaranteed 300mA output current
Internal R
on
=1.5Ω PMOS draw no base current
Highly Accurate : ±2%, 1.5V to 5V with 0.1V step
Low quiescent current : 100µA
Fast transient response
Good load regulation
Current limit and thermal shutdown protection
Ultra Small Packages : TO-92, SOT-89, SOT-23
Applications
Wireless Communication
Cameras, video recorders
Portable games
Portable AV equipment
Battery powered equipment
CD-ROM, DVD, and LAN Card
SOT-23
PJ2800
Pin 1. Out
2. Gnd
3. Int
PJ2800A
Pin 1. Gnd
2. In
3. Out
(Heatsink surface connected to Pin 2)
PJ2800
Pin 1. In
2. Out
3. Gnd
PJ2800A
Pin 1. Gnd
2. Out
3. In
ORDER INFORMATION
Device
PJ28xxCT
PJ28xxCY
PJ28xxCX
PJ28xxACT
PJ28xxACY
PJ28xxACX
Note:
1. xx is the index of output voltage, ex. 33=3.3V
2. Available output voltage – 1.5/1.8/2.5/2.8/3.0/3.2/3.3/5.0
3. Contact factory fro additional voltage options.
-20℃ ~ +85
o
C
Operation Temperature
Package
TO-92
SOT-89
SOT-23
TO-92
SOT-89
SOT-23
1-5
2003/04 .rev.B
PJ2800 Series
Preliminary
300mA CMOS LDO REGULATORS
ABSOLUTE MAXIMUM RATINGS
Parameter
Input Voltage
Package thermal resistance
TO-92
SOT-89
SOT-23
Power Dissipation
P
D
@ T
A
= 25℃
TO-92
SOT-89
SOT-23
Operating Junction Temperature range
Storage Temperature range
Top
Tst
P
D
Symbol
V
cc
Value
12
100
100
250
625
500
150
-40 ~ +125
-65 ~ +150
℃
℃
mW
Unit
V
℃/W
θ
JA
ELECTRICAL CHARACTERISTICS
(Ta = +25°C unless otherwise noted)
Parameter
Input Voltage
Output Voltage accuracy
Current Limit (Note 2)
Load Regulation (Note 3)
Dropout Voltage (Note 1)
Standby Current
Line Regulation
Output Voltage (Note 4)
Symbol
V
IN
V
OUT
I
LIMIT
∆V
LOAD
V
DROP
V
STANDBY
∆V
LINE
∆V
OUT
V
IN
=5V, I
OUT
=1mA
V
IN
=5V, V
OUT
=0V
I
OUT
=1~300mA, V
IN
=5V
I
OUT
=300mA
I
OUT
=0mA, V
IN
=12V
I
OUT
=1mA, V
IN
=4.5~12V
Conditions
Min
--
-2
350
--
--
--
--
--
Typ
--
--
450
1
450
100
2
50
Max
10
+2
--
30
600
110
3
150
Unit
V
%
mA
mV
mV
µA
%/V
PPM/
o
C
Temperature Coefficient
Note 1.
Dropout voltage is defined as the input to output differential voltage. Dropout is measured at constant junction temperature by using
pulsed ON time, and the criterion is V
OUT
Inside target value ±2%. This test is skipped at the condition of V
IN
<3V.
2.
Current limit is measured at constant junction temperature by using pulsed testing with a low ON time.
3.
Regulation is measured at constant junction temperature by using pulsed testing with a low ON time
4.
Guaranteed by design.
BLOCK DIAGRAM
2-5
2003/04 .rev.B
PJ2800 Series
Preliminary
300mA CMOS LDO REGULATORS
TYPICAL APPLICATION CIRCUIT
MEASURING CIRCUITS
Measuring Circuit 1: Supply Current
Measuring Circuit 2: Output Voltage, Oscillation Check, Line Regulation, Dropout Voltage, Load Regulation
3-5
2003/04 .rev.B
Analog electronics
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