ZXCL250 ZXCL260 ZXCL280
ZXCL300 ZXCL330 ZXCL400
ULTRA SMALL MICROPOWER SC70 LOW DROPOUT REGULATORS
DESCRIPTION
The ZXCL series are very small low dropout
regulators designed for use in low power and
severely space limited applications.
The devices operate with a low dropout voltage,
typically of only 85mV at 50mA load. Supply current
is minimised with a ground pin current of only 50µA
at full 150mA load. Logic control allows the devices
to be shut down, consuming typically less than 10nA.
These features make the device ideal for battery
powered applications where power economy is
critical.
The parts have been designed with space sensitive
systems in mind. They are available in the ultra small
SC70 package, which is half the size of other SOT23
based regulator devices.
FEATURES
For applications requiring improved performance
over alternative devices, the ZXCL is also offered in
the 5 pin SOT23 package with an industry standard
pinout.
The devices feature thermal overload and
over-current protection and are available with output
voltages of 2.5V, 2.6V, 2.8V, 3V, 3.3V and 4V. Other
voltage options between 1.5V and 4V can be
provided. Contact Zetex marketing for further
information.
The ZXCL series are manufactured using CMOS
processing, however advanced design techniques
mean that output noise is improved even when
compared to other bipolar devices.
APPLICATIONS
•
5-pin SC70 package for the ultimate in space
saving
•
Cellular and Cordless phones
•
Palmtop and laptop computers
•
PDA
•
Hand held instruments
•
Camera, Camcorder, Personal Stereo
•
PCMCIA cards
•
Portable and Battery-powered equipment
•
5-pin SOT23 industry standard pinout
•
Low 85mV dropout at 50mA load
•
50µA ground pin current with full 150mA load
•
Typically less than 10nA ground pin current on
shutdown
•
2.5, 2.6, 2.8, 3, 3.3 and 4 volts output
•
Very low noise, without bypass capacitor
•
Thermal overload and over-current protection
•
-40 to +85°C operating temperature range
PACKAGE FOOTPRINT
Total Aea
2.1mm x 2mm
=4.2mm
2
TYPICAL APPLICATION CIRCUIT
Battery Supply
Output Voltage
ZXCL
Total Aea
2.8mm x 2.9mm
=8.12mm
2
ISSUE 5 - NOVEMBER 2001
1
ZXCL250 ZXCL260 ZXCL280
ZXCL300 ZXCL330 ZXCL400
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage with respect to GND
V
IN
-0.3V to 7.0V
E
N
-0.3V to 10V
V
O
-0.3V to 5.5V
Package Power Dissipation (T
A
=25°C)
SC70
SOT23-5
300mW (Note 1)
450mW (Note 1)
Output short circuit duration
Continuous Power Dissipation
Operating Temperature Range
Storage Temperature Range
Infinite
Internally limited
-40°C to +85°C
-55°C to +125°C
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 in the operational sections of the specifications is not implied. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
V
IN
= V
O
+ 0.5V, typical values at TA = 25 C V
(Unless otherwise stated)
SYMBOL
PARAMETER
CONDITIONS
MIN
V
IN
V
O
Input Voltage
Output Voltage
I
O
= 1mA
ZXCL250
ZXCL260
ZXCL280
ZXCL300
ZXCL330
ZXCL400
I
O
= 100mA
V
O
+ 0.5V < V
IN
< V
IN
max.
ZXCL250
ZXCL260
ZXCL280
ZXCL300
ZXCL330
ZXCL400
(note2)
2.450
2.548
2.744
2.940
3.234
3.920
2.5
2.6
2.8
3.0
3.3
4.0
LIMITS
TYP
MAX
5.5
2.550
2.652
2.856
3.060
3.366
4.080
UNITS
V
V
2.425
2.522
2.744
2.910
3.201
3.880
-15
2.575
2.678
2.884
3.090
3.399
4.120
V
∆V
O
/∆T
Output Voltage
Temperature
Coefficient
Output Current
Over Current Limit
Ground pin current
ZXCL250 only
ZXCL250 only
No Load
I
O
= 150mA,
I
O
= 100mA,
150
100
160
105
ppm/°C
I
O(MAX)
I
OLIM
I
Q
mA
230
25
50
40
800
750
50
120
100
mA
A
A
A
ISSUE 5 - NOVEMBER 2001
2
ZXCL250 ZXCL260 ZXCL280
ZXCL300 ZXCL330 ZXCL400
ELECTRICAL CHARACTERISTICS
V
IN
= V
O
+ 0.5V, typical values at T
A
=25°C
(Unless otherwise stated)
SYMBOL
PARAMETER
CONDITIONS
MIN
V
DO
Dropout Voltage
Note 3
ZXCL250
I
O
=10mA
I
O
=50mA
I
O
=100mA
ZXCL260
I
O
=10mA
I
O
=50mA
I
O
=100mA
ZXCL280
I
O
=10mA
I
O
=50mA
I
O
=100mA
ZXCL300
I
O
=10mA
I
O
=50mA
I
O
=100mA
ZXCL330
I
O
=10mA
I
O
=50mA
I
O
=100mA
ZXCL400
I
O
=10mA
I
O
=50mA
I
O
=100mA
V
IN
=(V
O
+0.5V) to 5.5V, I
O
=1mA
I
O
=1mA to 100mA
f=10Hz to 100kHz, C
O
=10µF,
T
A
= -40°C
2
2.2
0
150
V
EN
=5.5V
V
EN
=0V
125
100
1
165
LIMITS
TYP
MAX
UNITS
15
85
163
15
85
155
15
85
140
15
85
140
15
85
140
15
85
140
0.02
0.01
50
mV
325
mV
310
mV
280
mV
280
mV
280
mV
280
0.1
0.04
%/V
%/mA
µV
rms
10
0.8
V
V
mV
nA
µA
°C
V
LNR
V
LDR
E
N
V
ENH
V
ENL
V
ENHS
I
EN
I
QSD
T
SD
Line Regulation
Load Regulation
Output Noise Voltage
Enable pin voltage for
normal operation
Enable pin voltage for
output shutdown
Enable pin hysteresis
Enable Pin input
current
Shutdown supply
current
Thermal Shutdown
Temperature
Device testing is performed at T
A
=25 C. Device thermal performance is guaranteed by design.
Note1: Maximum power dissipation is calculated assuming the device is mounted on a PCB measuring 2
inches square
Note 2: Output Voltage will start to rise when V
IN
exceeds a value or approximately 1.3V. For normal
operation, V
IN
(min) > V
OUT
(nom) + 0.5V.
Note 3: Dropout voltage is defined as the difference between V
IN
and V
O
, when V
O
has dropped 100mV below
ISSUE 5 - NOVEMBER 2001
3
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