UNISONIC TECHNOLOGIES CO., LTD
UM607
CC, CV CONTROL FOR
BATTERY CHARGER AND
ADAPTOR
DESCRIPTION
The UTC
UM607
is a voltage and current control IC which has
precision voltage reference. These devices have been optimized for
battery charger, adapter, second controller of switching regulator
systems, and other battery systems.
6
5
4
LINEAR INTEGRATED CIRCUIT
1
2
3
SOT-26
FEATURES
* Constant Voltage Control (CV) and Constant Current Control (CC)
* Input voltage ranging from 2.2V to 14V
* 40mA photo coupler drive current typically
* 1mA maximum operating current
* Internal Precision Voltage Reference : 1.240V
±
1%
* Easy compensation and low external component count.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UM607xL-AG6-R
UM607xG-AG6-R
Package
SOT-26
Packing
Tape Reel
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QW-R105-037.B
UM607
MARKING INFORMATION
PACKAGE
A-CH REFERENCE VOLTAGE
CODE
LINEAR INTEGRATED CIRCUIT
MARKING
6 5
4
150mV
SOT-26
70mV
B
D
UM7 G
1
2
3
Reference Voltage
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
PIN NAME
A-INPUT
GND
B+INPUT
V
CC
PC
A+INPUT
DESCRIPTION
Input Pin of the Current Control Loop
Ground Line. 0V Reference For All Voltages
Input Pin of the Voltage Control Loop
DC Supply Line
Photo Coupler (P/C) Drive Pin. Sinking Current Only
Input Pin of the Current Control Loop
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www.unisonic.com.tw
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QW-R105-037.B
UM607
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
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QW-R105-037.B
UM607
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
(Ta=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
V
CC
16
V
Power Dissipation (Note 2)
P
D
500
mW
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-55 ~ +150
°C
Notes: 1. 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.
2. Mount on a glass epoxy circuit board of 30x30mm Pad dimension of 50mm
2
RECOMMENDED OPERATING CONDITIONS
PARAMETER
DC Supply Voltage
SYMBOL
V
CC
RATINGS
2.2 ~ 14
UNIT
V
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, Ta=25°C, unless otherwise specified)
PARAMETER
Operating Current
Leakage Current
Saturation Voltage
PC Terminal Current
Output Voltage High
A CH : Current Control Loop
Reference Voltage
SYMBOL
I
CC
I
PC(LEAK)
V
PC(SAT)
I
PC
V
OH
V
REF(A)
TEST CONDITIONS
I
PC
= off
V
+
=V
PC
=14V
I
PC
= 20 mA
R
L
= 30KΩ
I
PC
= 2.5mA
UM607B
UM607D
144
66.5
MIN
TYP
0.6
500
40
V
CC
-0.1
150
70
20
8
MAX
1.0
10
700
70
UNIT
mA
μA
mV
mA
V
mV
20
Input Bias Current
I
B(A)
μA
Transconduction Gain (Note 1)
G
M(A)
1.5
mA/mV
B CH : Voltage Control Loop
Reference Voltage (Note 2)
V
REF(B)
I
PC
= 1.5mA
1.227 1.240 1.253
V
Input Bias Current
I
B(B)
50
500
nA
Transconduction Gain (Note 3)
G
M(B)
1
3
mA/mV
Notes: 1. When the positive input at I
CTRL
is lower than -151mV, and the voltage is decreased by 1mV, the sinking
current at the output OUT will be increased by 8mA.
2. The internal voltage reference is set at 1.240V (bandgap reference). The voltage control loop precision
takes into account the cumulative effects of the internal voltage reference deviation as well as the input
offset voltage of the trans-conductance operational amplifier.
3. If the voltage on B +Input (the positive input of the amplifier) is higher than the negative amplifier input
(V
REF(B)
= 1.240V), and it is increased by 1mV, the sinking current at the output OUT will be increased by
3mA.
156
73.5
50
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-037.B
UM607
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
In the above application schematic, the UTC
UM607
is used on the secondary side of a flyback adapter (or
battery charger) to provide an accurate control of voltage and current. The above feedback loop is made with an
optocoupler.
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www.unisonic.com.tw
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QW-R105-037.B
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