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CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 1
GENERAL DESCRIPTION
FEATURES
The CM2860/2861 family is a positive voltage linear regulator
developed utilizing CMOS technology featured low quiescent
current (30A typ.), low dropout voltage, and high output
voltage accuracy. Built-in low on-resistance transistor provides
low dropout voltage and large output current. A 2.2F or
greater can be used as an output capacitor.
The SOT-89 and SOT-223 packages are attractive for
"Pocket" and "Hand Held" applications.
These robust devices are designed to prevent device failure
under the worst operation condition with both Thermal
Shutdown and Current Fold-back.
Very Low Dropout Voltage
Low Current Consumption: Typ. 30A, Max. 35A
High Accuracy Output Voltage: +/- 1.5%
Guaranteed 600mA Output
Thermal Shutdown
Current Limiting
Compact Package: SOT-89 and SOT-223
Factory Pre-set Output Voltages
Short Circuit Current Fold-Back
Low Temperature Coefficient
APPLICATIONS
Battery-powered devices
Personal communication devices
Home electric/electronic appliances
PC peripherals
TYPICAL APPLICATIONS
CM2860/1
IN OUT
GND
IN
OUT
VIN
C1
1uF
C2
2.2uF
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 2
PIN CONFIGURATION
SOT-89
Top View
1
2
3
SOT-223
Top View
1
2
3
2860
Pin 1
GND
Pin 2
VIN
Pin 3
VOUT
2860
2861
Pin 1
VIN
GND
Pin 2
GND
VOUT
Pin 3
VOUT
VIN
BLOCK DIAGRAM
Overcurrent
Shutdown
Thermal
Shutdown
R1
R2
IN
OUT
GND
V
r
ef
=
1.
176V
AMP
-
+
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 3
ORDERING INFORMATION
Part Number
Output Voltage
Temperature Range
Package
CM2860KIM89 2.5V -40
~ +85
SOT-89
CM2860KIM223
2.5V
-40
~ +85
SOT-223
CM2860SIM89 3.3V -40
~ +85
SOT-89
CM2860SIM223
3.3V
-40
~ +85
SOT-223
CM2861KIM223
2.5V
-40
~ +85
SOT-223
CM2861SIM223
3.3V
-40
~ +85
SOT-223
CM2860GKIM89
2.5V
-40
~ +85
SOT-89
CM2860GKIM223
2.5V
-40
~ +85
SOT-223
CM2860GSIM89
3.3V
-40
~ +85
SOT-89
CM2860GSIM223
3.3V
-40
~ +85
SOT-223
CM2861GKIM223
2.5V
-40
~ +85
SOT-223
CM2861GSIM223
3.3V
-40
~ +85
SOT-223
Note: For other pre-set output voltage, please contact Champion Sales office.
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
Input Voltage .................................................. +7V
Output Current ............................................... 1A
Output Voltage ........................ GND-0.3V to V
IN
+0.3V
ESD Classification ................................................ B
Ambient Temperature Range (T
A
) ......... -40
to +85
Junction Temperature Range ........... -40
to +125
THERMAL INFORMATION
Parameter
Maximum
Unit
SOT-89 100
Thermal Resistance (
jc
)
SOT-223 50
/W
SOT-89 180
Thermal Resistance (
ja
)
SOT-223 100
/W
SOT-89 400
SOT-223 (CM2860)
900
Internal Power Dissipation (P
D
)
(
T = 100
, No Heatsink)
SOT-223 (CM2861)
800
mW
Maximum Junction Temperature
150
Maximum Lead Temperature (10 Sec)
300
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 4
ELECTRICAL CHARACTERISTICS
T
A
= +25
; V
IN
= V
IN(MIN)
unless otherwise noted
CM2860/CM2861
Parameter Symbol Test
Conditions
Min. Typ. Max.
Unit
Input Voltage
V
IN
Note
1
7
V
Output Voltage Accuracy
V
OUT
I
O
= 1mA
-1.5
1.5
%
1.5V<V
O(NOM)
<=2.0V
1000
2.0V<V
O(NOM)
<=2.8V
800
mV
Dropout Voltage
V
DROPOUT
I
O
= 600mA,
V
OUT
=V
O(NOM)
-1.5%,
2.8V<V
O(NOM)
<3.8V
600
mV
Output Current
I
O
V
OUT
> 1.2V
600
mA
Current Limit
I
LIM
V
OUT
> 1.2V, V
IN
= V
IN(MIN)
600 1000
mA
Short Circuit Current
I
SC
V
OUT
< 0.8V
250
mA
Quiescent Current
I
Q
I
O
= 0mA
30
50
A
Ground Pin Current
I
GND
I
O
= 1mA to 600mA
30
50
A
V
OUT
<= 2.0V
0.15
%
Line Regulation
REG
LINE
I
OUT
=5mA, V
IN
=V
OUT
+1 to
V
OUT
+2
V
OUT
> 2.0V
0.02
0.1
%
Load Regulation
REG
LOAD
I
O
=1mA to 600mA
0.2
1
%
Over Temperature Shutdown
OTS
150
Over Temperature Hystersis
OTH
30
V
OUT
Temperature Coefficient
TC
30
ppm/
f=1kHz 50
f=10kHz 20
Power Supply Rejection
PSRR
I
O
= 100mA
C
O
=2.2F ceramic
f=100kHz 15
dB
C
O
=2.2F 30
Output Voltage Noise
eN
f=10Hz to 100kHz
I
O
= 10mA, C
VBG
=0F
C
O
=100F 20
Vrms
Note 1. V
IN(MIN)
= V
OUT
+ V
DROPOUT
Note 2. As V
IN
is larger than V
IN(MIN)
, the Current Limit and output short current Spec value will increase
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 5
DETAILED DESCRIPTION
The CM2860/CM2861 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current
protection, thermal shutdown, and short circuit protection.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, short output protection, and thermal
protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current
and Thermal shutdown circuits become active when the junction temperature exceeds 150
, or the current exceeds 600mA.
During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops
below 120
.
The CM2860/CM2861 switches from voltage mode to current mode when the load exceeds the rated output current. This
prevents over-stress. The CM2860/2861 also incorporates current fold-back to reduce power dissipation when the output is
short-circuited. This feature becomes active when the output drops below 0.8V, and reduces the current flow by 65%. Full current
is restored when the voltage exceeds 0.8V.
EXTERNAL CAPACITOR
The CM2860/CM2861 is stable with an output capacitor to ground of 2.2F or greater. It can keep stable even with higher or poor
ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be larger than 0.1F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground
termination is desirable.
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 6
TYPICAL ELECTRICAL CHARACTERISTICS
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 7
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 8
PACKAGE DIMENSION
SOT-89 (M89)
e1
e
D1
H
E
A
b
L
b1
C
D
D
D1
e
e1
E
L
H
8
b
b1
b
C
5
1.0
A
SOT-223 (M223)
L1
e1
H
L
A
B1
B
D
E
e
e
e1
E
L1
8
B
B
H
B1
D
A
L
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 9
NUMBERING SCHEME
Ordering Number: CM2860XYZ/CM2861XYZ (note1)
Ordering Number: CM2860GXYZ/CM2861GXYZ (note2)
note1:
CM2860/CM2861: 600mA CMOS LDO
X : Suffix for voltage output (note 3)
Y : Suffix for Temperature Range (note 4)
Z : Suffix for Package Type (note 5)
note2:
CM2860/CM2861: 600mA CMOS LDO
G : Suffix for Pb Free Product
X : Suffix for voltage output (note 3)
Y : Suffix for Temperature Range (note 4)
Z : Suffix for Package Type (note 5)
note 3: see CMOS LDO Voltage Suffix Table
note 4:
Y= I : -40
~+85
(only I grade support for all CMOS LDOs)
note 5:
Z is single alphabet with or without digits
M223 : SOT-223 (TR only)
M89 : SOT-89 (TR only)
CMOS LDO Voltage Suffix Table
Output Voltage
Suffix
Output Voltage
Suffix
1.5V A 3.0V P
1.6V B 3.1V Q
1.7V C 3.2V R
1.8V D 3.3V S
1.9V E 3.4V T
2.0V F 3.5V U
2.1V G 3.6V V
2.2V H 3.7V W
2.3V I 3.8V X
2.4V J 3.9V Y
2.5V K 4.0V Z
2.6V L
2.7V M
2.8V N
2.9V O
CM2860/CM2861
600mA CMOS LDO
2004/05/12
Rev. 1.5
Champion Microelectronic Corporation
Page 10
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated
circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify,
before placing orders, that the information being relied on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or
environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for
use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is
understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the
customer should provide adequate design and operating safeguards.
HsinChu Headquarter
Sales & Marketing
5F, No. 11, Park Avenue II,
Science-Based Industrial Park,
HsinChu City, Taiwan
11F, No. 306-3, SEC. 1, Ta Tung Road,
Hsichih, Taipei Hsien 221, Taiwan
T E L : +886-3-567 9979
T E L : +886-2-8692 1591
FAX: +886-3-567 9909
FAX: +886-2-8692 1596
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