CM2833DIM25 [ETC]
300mA CMOS LDO WITH ENABLE; 300毫安CMOS LDO与启用
| 型号： | CM2833DIM25 |
| 厂家： | 
ETC |
| 描述： | 300mA CMOS LDO WITH ENABLE |
| 文件： | 总11页 (文件大小：267K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CM2833
300mA CMOS LDO WITH ENABLE
GENERAL DESCRIPTION
FEATURES
The CM2833 family is a positive voltage linear regulator
ꢀ
Very Low Dropout Voltage
developed utilizing CMOS technology featured low quiescent ꢀ
Low Current Consumption: Typ. 30µA, Max. 35µA
Output Voltage: 1.8V, 1.9V, 2.2V, 2.5V, 2.7V, 2.8V, 3.0V,
3.3V, 3.5V, 3.6V, and 3.8V
current (30µA typ.), low dropout voltage, and high output
voltage accuracy, making them ideal for battery applications.
EN input connected to CMOS has low bias current. The
ꢀ
ꢀ
High Accuracy Output Voltage: +/- 1.5%
Guaranteed 300mA Output
space-saving SOT-23-5 package is attractive for “Pocket” and ꢀ
“Hand Held” applications.
ꢀ
ꢀ
Input Range up to 7.0V
Thermal Shutdown
These rugged devices have both Thermal Shutdown, and ꢀ
Current Fold-back to prevent device failure under the “Worst” ꢀ
Current Limiting
Compact Package: SOT-23-5
Factory Pre-set Output Voltages
Short Circuit Current Fold-Back
Low Temperature Coefficient
of operating conditions.
ꢀ
ꢀ
In application requiring a low noise, regulated supply, place a ꢀ
1000pF capacitor between Bypass and Ground.
The CM2833 is stable with an output capacitance of 2.2µF or
greater.
APPLICATIONS
24 Hours Technical Support--WebSIM
ꢀ
ꢀ
ꢀ
ꢀ
Battery-powered devices
Personal communication devices
Home electric/electronic appliances
PC peripherals
Champion provides customers an online circuit simulation tool
called WebSIM. You could simply logon our website at
www.champion-micro.com for details.
TYPICAL APPLICATIONS
IN
OUT
IN
OUT
CM2833
BYP
GND
EN
C1
C2
C3
5V
1uF
1nF
2.2uF
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 1
CM2833
300mA CMOS LDO WITH ENABLE
PIN CONFIGURATION
SOT-23-5
Top View
5
4
1
2
3
BLOCK DIAGRAM
IN
OUT
Overcurrent
Shutdown
1uA
R1
Thermal
Shutdown
EN
BYP
-
AMP
+
R2
GND
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 2
CM2833
300mA CMOS LDO WITH ENABLE
ORDERING INFORMATION
Part Number
CM2833DIM25
CM2833EIM25
CM2833HIM25
CM2833KIM25
CM2833MIM25
CM2833NIM25
CM2833PIM25
CM2833SIM25
CM2833UIM25
CM2833VIM25
CM2833XIM25
Output Voltage
Temperature Range
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
1.8V
1.9V
2.2V
2.5V
2.7V
2.8V
3.0V
3.3V
3.5V
3.6V
3.8V
Note: For other pre-set output voltage requirements, please contact Champion Sales office.
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
Input Voltage …………….……………………………. +7V
Ambient Temperature Range (TA) ……... -40℃ to +85℃
Junction Temperature Range …..…... -40℃ to +125℃
Output Current …………………….……
PD / (VIN - Vo) mA
Output Voltage …………………… GND-0.3V to VIN+0.3V
ESD Classification ………………………………………… B
THERMAL INFORMATION
Parameter
Maximum
Unit
Thermal Resistance (Θjc)
Internal Power Dissipation (PD)
℃/W
SOT-23-5
SOT-23-5
160
℃/W
320
(ΔT = 100℃)
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
150
300
℃
℃
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 3
CM2833
300mA CMOS LDO WITH ENABLE
ELECTRICAL CHARACTERISTICS
TA = +25℃; unless otherwise noted
CM2833
Parameter
Symbol
Test Conditions
Unit
Min.
Note 1
-1.5
Typ.
Max.
7
Input Voltage
VIN
V
Output Voltage Accuracy
VOUT
IO = 1mA
1.2V<VO(NOM)<=2.0V
1.5
%
1300
800
300
mV
IO = 300mA,
Dropout Voltage
VDROPOUT
2.0V<VO(NOM)<=2.5V
2.5V<VO(NOM)
V
OUT=VO(NOM)-1.5%,
mV
mA
mA
mA
μA
μA
%
Output Current
Current Limit
IO
ILIM
ISC
IQ
VOUT > 1.2V
300
300
VOUT > 1.2V
VOUT < 0.95V
IO = 0mA
450
150
30
Short Circuit Current
Quiescent Current
Ground Pin Current
300
35
IGND
IO = 1mA to 300mA
30
50
IOUT=5mA, VIN=VOUT+1 to
VOUT+2
VOUT <= 3.0V
-0.15
-0.3
0.03
0.06
0.2
150
30
0.15
0.3
1
Line Regulation
REGLINE
V
OUT > 3.0V
%
Load Regulation
REGLOAD
OTS
IO=1mA to 300mA
%
℃
Over Temperature Shutdown
Over Temperature Hysteresis
VOUT Temperature Coefficient
℃
OTH
TC
25
ppm/℃
f=1kHz
f=10kHz
60
IO = 100mA
Power Supply Rejection
PSRR
PSRR
dB
dB
50
CO=2.2µF ceramic
f=100kHz
f=1kHz
40
75
IO = 100mA
CO=2.2µF ceramic
CBYP=0.01µF
Power Supply Rejection
Output Voltage Noise
f=10kHz
55
f=100kHz
CO=2.2µF
CO=100µF
CO=2.2µF
CO=100µF
30
f=10Hz to 100kHz
IO = 10mA, CBYP=0µF
f=10Hz to 100kHz
IO = 10mA, CBYP=0.01µF
30
eN
eN
μVrms
μVrms
20
30
Output Voltage Noise
Shutdown Supply Current
EN Input Bias Current
20
ISD
IEH
VIN=5.0V, VOUT=0V, VEN < VEL
2.0
3.0
0.1
3.0
VIN
μA
μA
μA
V
VEN=VIN, VIN=2.6V to 7V
VEN=VIN, VIN=2.6V to 7V
VIN=2.6V to 7V
IEL
1.0
VEH
VEL
VIN/2+0.8V
VIN/2-0.8V
EN Input Threshold
VIN=2.6V to 7V
0
V
Note 1. VIN(MIN) = VOUT + VDROPOUT
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 4
CM2833
300mA CMOS LDO WITH ENABLE
DETAILED DESCRIPTION
The CM2833 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 300mA.
During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops
below 120℃.
The CM2833 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents
over-stress. The CM2833 also incorporates current fold-back to reduce power dissipation when the output is short-circuited. This
feature becomes active when the output drops below 1.05V, and reduces the current flow by 65%. Full current is restored when
the voltage exceeds 0.95V.
ENABLE
The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut off, and all internal circuits are
powered down. In this state, the quiescent current is less than 2µA. This pin behaves much like an electronic switch.
EXTERNAL CAPACITOR
The CM2833 is stable with an output capacitor to ground of 2.2µF 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 0.1µF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground
termination is desirable.
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 5
CM2833
300mA CMOS LDO WITH ENABLE
TYPICAL ELECTRICAL CHARACTERISTICS
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 6
CM2833
300mA CMOS LDO WITH ENABLE
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 7
CM2833
300mA CMOS LDO WITH ENABLE
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 8
CM2833
300mA CMOS LDO WITH ENABLE
PACKAGE DIMENSION
SOT-23-5 (M25)
D
5
4
b1
With Plating
A
A1
A2
b
b
Base Metal
b1
c
Section B-B
c1
D
E
1
3
E1
L
e 2
b
L1
e
e1
e1
θ
θ1
θ2
L
See Section B-B
L1
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 9
CM2833
300mA CMOS LDO WITH ENABLE
NUMBERING SCHEME
Ordering Number: CM2833XYZ (note1)
note1:
CM2833 : 300mA CMOS LDO with enable
X : Suffix for voltage output (note 2)
Y : Suffix for Temperature Range (note 3)
Z : Suffix for Package Type (note 4)
note 2: see CMOS LDO Voltage Suffix Table
CM2833 will provide options of A(1.5V), D (1.8V), E(1.9V),, H(2.2V), K(2.5V), M(2.7V), N(2.8V), P(3.0V), S(3.3V), U(3.5V),
V(3.6V), X(3.8V)
note 3:
Y= I : -40℃~+85℃ (only I grade support for all CMOS LDOs)
note 4:
Z is single alphabet with or without digits
M25 : SOT-25 (TR only)
CMOS LDO Voltage Suffix Table
Output Voltage
1.5V
Suffix
A
Output Voltage
3.0V
Suffix
P
1.6V
1.7V
1.8V
1.9V
B
3.1V
3.2V
3.3V
3.4V
Q
R
S
C
D
E
T
2.0V
F
3.5V
U
2.1V
2.2V
2.3V
G
H
I
3.6V
3.7V
3.8V
V
W
X
2.4V
J
3.9V
Y
2.5V
K
4.0V
Z
2.6V
L
2.7V
2.8V
2.9V
M
N
O
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 10
CM2833
300mA CMOS LDO WITH ENABLE
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
TEL: +886-3-567 9979
FAX: +886-3-567 9909
TEL: +886-2-8692 1591
FAX: +886-2-8692 1596
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 11
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