UNISONIC TECHNOLOGIES CO., LTD
UM606
CONSTANT VOLTAGE AND
CONSTANT CURRENT
CONTROLLER
DESCRIPTION
6
5
4
LINEAR INTEGRATED CIRCUIT
The UTC
UM606,
for a constant voltage/constant current mode
SMPS (switch mode power supplies) application which is a highly
integrated solution, it contains one 1.21V voltage reference with ±1%
accuracy, one current sensing circuit and two operational amplifiers.
The UTC
UM606
is an ideal voltage controller for use in adapters
and battery chargers because the voltage reference it’s combining
with one operational amplifier. And the UTC
UM606
is an ideal
current limiter for output low side current sensing because the other
low voltage reference is combining with the other operational
amplifier.
1
2
3
SOT-26
FEATURES
*Constant Voltage and Constant Current Control
*Precision Internal Voltage Reference
*Few External Components
*Easy Compensation
ORDERING INFORMATION
Ordering Number
Lead Free
UM606xL-AG6-R
Halogen Free
UM606xG-AG6-R
Package
SOT-26
Packing
Tape Reel
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Copyright © 2013 Unisonic Technologies Co., Ltd
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QW-R105-034.F
UM606
MARKING
PACKAGE
CODE
6 5
SOT-26
-
(For UM606)
1
6
SOT-26
D
(For UM606x)
1
2
3
UM6
2
5
3
4
UME6
4
L: Lead Free
G: Halogen Free
MARKING
LINEAR INTEGRATED CIRCUIT
L: Lead Free
G: Halogen Free
Reference Voltage
PIN CONFIGURATION
PIN DESCRIPTION
PIN NAME
V
CTRL
GND
V
OUT
I
CTRL
V
SENSE
V
CC
FUNCTION
Input pin of the voltage control loop
Ground
Output pin. sinking current only
Input pin of the current control loop
Input pin of the current control loop
Power supply
PIN NO.
1
2
3
4
5
6
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QW-R105-034.F
UM606
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
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QW-R105-034.F
UM606
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C, unless otherwise specified.)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
V
CC
20
V
Input Voltage
V
IN
-0.3 ~ V
CC
V
Junction Temperature
T
J
+150
°C
Operating Temperature
T
OPR
-40~+105
°C
Storage Temperature
T
STG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
SYMBOL
θ
JA
θ
JC
RATINGS
250
92
UNIT
°C/W
°C/W
PARAMETER
Junction to Ambient
Junction to Case
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
V
CC
RATINGS
2.5
~
18
UNIT
V
Supply Voltage
ELECTRICAL CHARACTERISTICS
(V
CC
=5V, T
A
=25°C, unless otherwise specified.)
PARAMETER
SYMBOL
V
REF
V
SENSE
V
OL
I
CC
I
IB
I
IBI
I
OS
Gmv
Gmi
UM606
UM606D
Output to V
CC
. Sink Current Only
Sink Current Only
@-200mV
TEST CONDITIONS
UM606
UM606D
UM606
I
OUT
=2.5mA
UM606D
UM606
@10mA
Sinking Current
UM606D
UM606
V
CC
=5V
UM606D
MIN
1.198
1.186
196
66.5
TYP
1.21
1.21
200
70
200
100
0.6
0.5
50
25
18
27
3.5
7
MAX
1.222
1.234
204
73.5
UNIT
V
mV
mV
1.2
1.0
mA
nA
μA
50
mA
mA/mV
mA/mV
Reference Voltage
Current Control Loop Reference
Low Output Voltage
Total Supply Current
Input Bias Current
Current Out of Pin I
CTRL
Output Short Circuit Current.
Transconduction Gain (V
CTRL
)
Transconduction Gain (I
CTRL
).
1
1.5
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4 of 9
QW-R105-034.F
UM606
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
V
OUT
½
V
REF
R1
R2
(V)
R1
Current Limit
½
V
SENSE
(A)
R
SS
Figure 1. Typical Application 1 of UTC
UM606
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-034.F
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