UNISONIC TECHNOLOGIES CO., LTD
UM608
Preliminary
LINEAR INTEGRATED CIRCUIT
CONSTANT VOLTAGE AND
CONSTANT CURRENT
CONTROLLER FOR BATTERY
CHARGERS
DESCRIPTION
The UTC
UM608
is a highly integrated solution for a constant
voltage/constant current mode SMPS application.
The UTC
UM608
contains one 2.5V voltage reference, one
operational amplifier for voltage control loop, one operational
amplifier for current control loop and two operational amplifiers for
charge status. It is suitable for battery charger and other battery
systems.
FEATURES
*
Constant Voltage and Constant Current Control
* Precision Internal Voltage Reference
* Few External Components
* Easy Compensation
* Charge status output for LED
* build-in overvoltage protection for battery
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UM608L-S08-R
UM608G-S08-R
UM608L-S08-T
UM608G-S08-T
xx: Output Voltage, refer to Marking Information.
UM608L-S08-R
(1)Packing Type
(2)Package Type
(3)Lead Free
Package
SOP-8
SOP-8
Packing
Tape Reel
Tube
Note:
(1) R: Tape Reel, T: Tube
(2) S08: SOP-8
(3) G: Halogen Free, L: Lead Free
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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UM608
PIN CONFIGURATION
Preliminary
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
V
CC
INPUT
OUT2
OUT1
GND
OUT
V
CTRL
V
SENSE
DESCRIPTION
Power supply
Input of charge status amplifier
Charge status output
Charge status output
Ground
Output pin. Sinking current only
Input pin of the voltage control loop
Input pin of the current control loop
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R105-043.a
UM608
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Power Supply Voltage
V
CC
35
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
PARAMETER
Junction to Ambient
SYMBOL
θ
JA
RATINGS
150
UNIT
°C/W
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Voltage Operating
SYMBOL
V
CC
RATINGS
5 ~ 32
UNIT
V
ELECTRICAL CHARACTERISTICS
(V
CC
=15V, T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
DEVICE SUPPLY
Supply Current
I
CC
V
CC
=15V
VOLTAGE CONTROL LOOP
Transconduction Gain (V
CTRL
)
G
MV
I/(V1-V2)
Voltage Control Loop Reference
V
REF
Input Bias Current
I
IBV
CURRENT CONTROL LOOP
Transconduction Gain (V
SENSE
)
G
MI
I/(V1-V2)
Current Control Loop Reference
V
SENSE
OUTPUT OF VOLTAGE AND CURRENT CONTROL LOOP
Low Output Voltage at 10mA
V
OL
Sinking Current
Max Output Current
I
OM
Output to V
CC
sink current only
OUTPUT OF CHARGE SUTUS
High Output Voltage at 10mA
V
OH
Source Current
Max Output Current
I
OM
Output to GND source current only
Sense charge status
V
REF
Input of charge status amplifier
MIN
TYP
2
1
3.5
1.25
50
7
190
200
27
13
13.5
20
65
50
14
40
MAX
4
UNIT
mA
mA/mV
V
nA
mA/mV
mV
mV
mA
V
mA
mV
1.5
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-043.a
UM608
NT 5D
FUS
3
1N54
R12
150k
Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
EC35
R13
39k
C8
68µ
C7
10n
C14 R25
510p 47
C2
FR206
C15
R26
470µ
6.8k
D5 ER804
FUSE2
5
R9
30k
+ BT1
- 48V
BT-
Rsense
0.1
DGND
BT+
x
AC
X2
AC
C2
47n
UTC
UC3842
N2AP817
d
D3
HER107
R14
10
R17
22
M2
R3
UTC
10k
8N60
R18 910
C9
0.47n
R19
910
D7
LED
D9 R15
d
10
N5AP817_1
d
OUT
COMP
GND
V
CC
C5
4.7n
R1
10k
FB ISENSE
V
REF
R
T
/C
T
R7 9.1K
C16
100µ
UTC UM608
V
CC
V
CTRL
INPUT V
SENSE
OUT2
OUT
OUT1
GND
R28
2k
Comp1_1
22p
Rcomp2 Comp2
22k
2.2n
R5
3.6k
C4
100n
C6
4.7n
Rs
500m
R29
45.45k
org=21k
BT-
R10
500
BT+
Comp1 Rcomp1
2.2n
470k
R32
1k Q3
DGND
R34
15k
R36
100k
C13
10µ
R23
5.1k
R6
3.6k
R
A
120k Qc
R
B
1k
LED LED
D4 D8
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-043.a
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