Download UTC UM601/A LINEAR INTEGRATED CIRCUIT

UTC UM601/A
LINEAR INTEGRATED CIRCUIT
VOLTAGE AND CURRENT
CONTROLLER
DESCRIPTION
The UTC UM601/A integrated circuit incorporates
a high stability series band gap voltage reference, two
ORed operational amplifiers and a current source.
This IC compares the DC voltage and the current
level at the output of a switching power supply to an
internal reference. It provides a feedback through an
optocoupler to the PWM controller IC in the primary
side.
The controlled current generator can be used to
modify the level of current limitation by offsetting the
information coming from the current sensing resistor.
FEATURES
*1.24V series voltage reference with 10mA output
current and 1% precision (UM601A)
*Two operational amplifiers with ORed output and
1MHz gain bandwidth product
*Built-in current gnerator with enable / disable function
*4.5 to 32V supply voltage range
SOP-8
DIP-8
APPLICATON
*Battery charger with a constant voltage and a limited
output current
*Every types of application requiring a precision
voltage regulation and current limitation
*Voltage supervisors
*Over voltage protection
PIN CONFIGURATION
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R121-001,A
UTC UM601/A
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
UNIT
Vcc
Iout
Pd
Vin
Iin
Tstg
Tj
Tthja
36
20
200
-0.3, Vcc-1.5
±1
-40 to +125
150
130 to 200
V
mA
mW
V
mA
°C
°C
°C/W
SYMBOL
VALUE
UNIT
Vcc
Topr
4.5 to 32
Tmin. to Tmax.
V
°C
DC Supply Voltage (note 1)
Output Current (note 2)
Power Dissipation
Input Voltage (note 3)
Input Current
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to
Ambient
OPERATING CONDITIONS
PARAMETER
Supply Voltage
Operating Free Air Temperature
ELECTRICAL CHARACTERISTICS( Ta=25°C , Vcc=15V, unless otherwise specified)
SYMBOL
TEST CONDITIONS
Total Supply Current
Input Voltage
Input Offset Voltage
PARAMETER
Icc
Vi
Vio
Vcc=15V
Input Bias Current
Iib
Output Sink Current
Isink
Large Signal Voltage Gain
Supply Voltage Rejection Ratio
Common Mode Rejection Ratio
Gain Bandwidth Product
Output Leakage Current
Avo
SVR
CMR
GBP
Ioh
25°C
Tmin.<Tamb.<Tmax
@Vin=1.2V on pin 7 and
Vin=0V on pin5
25°C
Tmin.<Tamb.<Tmax.
Vo1=2.5V
25°C
Tmin.<Tamb.<Tmax.
RL=2kΩ
Tmin.<Tamb.<Tmax.
Tmin.<Tamb.<Tmax
Tmin.<Tamb.<Tmax
Vcc=15V, F=100kHz,
Vin=10mV, RL=2kΩ,
CL=100pF
25°C
Tmin.<Tamb.<Tmax
MIN
0
-5
-7
TYP.
1
MAX
UNIT
2
Vcc-1.5
5
7
mA
V
mV
nA
-700
-1000
-300
0
0
mA
15
8
V/mV
15
65
90
80
1
dB
dB
MHz
2
7
µA
ELECTRICAL CHARACTERISTICS( Ta=25°C , Vcc=15V, unless otherwise specified)
VOLTAGE REFERENCE: UM601
PARAMETER
Reference Voltage
Temperature Stability
Load Regulation
Line Regulation
UTC
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vref
Kvt
Reglo
Regli
Iout=1mA, Tamb.=25°C
Tmin.<Tamb.<Tmax.
1<Iout<10mA
5<Vin<32V
1.21
1.24
30
5
3.5
1.27
100
15
10
ppm/°C
mV
mV
UNISONIC TECHNOLOGIES CO., LTD.
V
2
QW-R121-001,A
UTC UM601/A
LINEAR INTEGRATED CIRCUIT
VOLTAGE REFERENCE: UM601A
PARAMETER
Reference Voltage
Temperature Stability
Load Regulation
Line Regulation
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vref
Kvt
Reglo
Regli
Iout=1mA, Tamb.=25°C
Tmin.<Tamb.<Tmax.
1<Iout<10mA
5<Vin<32V
1.227
1.240
30
5
3.5
1.252
100
15
10
ppm/°C
mV
mV
TYP
MAX
UNIT
0.030
0.6
mA
ppm/°C
mA
V
V
CURRENT GENERATOR UM601/UM601A
PARAMETER
Current Source
Temperature Stability
Line Regulation
Voltage at the enable pin to have
Io=1.4mA
Voltage at the enable pin to have
Io=0mA
Input Current on the Csen pin
Leakage Current
SYMBOL
TEST CONDITIONS
Io
Kcgt
Cglir
Vcsen
Tmin.<Tamb.<Tmax.
4.5V<Vcc<32V
Tmin.<Tamb.<Tmax.
Vcsdis
Tmin.<Tamb.<Tmax.
Icsen
Icsleak
Tmin.<Tamb.<Tmax.
Vcs=2V
Tmin.<Tamb.<Tmax.
MIN
1.4
500
0.003
2
V
0.5
30
2
µA
µA
DESCRIPTION
PIN
NAME
TYPE
FUNCTION
1
7
5
3
2
Vref
Vrin
Crin
Crref
Csen
OUTPUT
INPUT
INPUT
INPUT
INPUT
6
OUTPUT
OUTPUT
8
4
Vcc
GND
INPUT
INPUT
Voltage Reference Output 1.24V, 10mA max. Do not short circuit
Voltage Regulation Loop Input
Current Limitation Loop Input, connected to the sense resistor
Current Limitation Reference Input
Current source enable input. This current source can be used to offset the
voltage measurement on the sense resistor and therefore to modify the charge
current. The current source is enabled when the input volage on pin 2 is lower
than 0.8V
Output pin common to the voltage regulation and current limitation loops. This
output can drive the primary side (LED) of an optocoupler
Power Supply Input (4.5 to 32VDC)
Ground
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R121-001,A