UNISONIC TECHNOLOGIES CO., LTD
UPS702
HIGH PERFORMANCE
CURRENT MODE POWER
SWITCH
DESCRIPTION
The UTC
UPS702
is designed to provide several special
enhancements to satisfy the needs, for example, Power-Saving
mode for low standby power (<0.3W), Frequency Hopping ,
Constant Output Power Limiting , Slope Compensation ,Over
Current Protection (OCP), Over Voltage Protection (OVP), Over
Load Protection (OLP), Under Voltage Lock Out (UVLO), Short
Circuit Protection (SCP) , Over Temperature Protection (OTP) etc.
IC will be shutdown or can auto-restart in situations.
LINEAR INTEGRATED CIRCUIT
DIP-8
FEATURE
* Low startup current (about 22μA)
* Fixed switching frequency(Norm. is 68KHz)
* Frequency hopping for Improved EMI Performance.
* Lower than 0.3W Standby Power Design
* Linearly decreasing frequency to 26KHz during light load
* Soft start
* Internal Slope Compensation
* Constant Power Limiting for universal AC input Range
* Gate Output Maximum Voltage Clamp(15V)
* Max duty cycle 74%
* Over temperature protection
* Overload protection
* Over voltage protection
* Leading edge blanking
* Cycle-by-Cycle current limiting
* Under Voltage Lock Out
* Short Circuit Protection
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UPS702L-D08-T
UPS702G-D08-T
Package
DIP-8
Packing
Tube
www.unisonic.com.tw
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UPS702
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
DRAIN
V
IN
V
CC
GND
1
2
3
4
8
7
6
5
DRAIN
CS
FB
SS
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
NAME
DRAIN
V
IN
V
CC
GND
SS
FB
CS
DRAIN
FUNCTION
Power MOSFET drain
For startup and constant power limit, this pin is pulled to the line input via resistor
Supply voltage
Ground
Soft-start
Feedback
Controller current sense input
Power MOSFET drain
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UPS702
BLOCK DIAGRAM
V
CC
3
Frequency
Hopping
UVLO
Reference voltage
Logic
Control
SS
5
Delay
Time
OTP
Burstmode
R
Q
Soft Start
Latch
S
Q
LINEAR INTEGRATED CIRCUIT
1
Oscillator
DRAIN
OVP
8
DRAIN
Driver
OLP
FB
6
PWM COMP
Slope
Compensation
Constant
Power Limit
OCP
LEB
7
CS
4
GND
2
V
IN
Notes: OLP (Over Load Protection)
OVP (Over Voltage Protection)
OTP (Over Temperature Protection)
OCP (Over Current Protection)
UVLO (Under Voltage Latch-Out)
LEB (Led Edge Blanking)
SS (Soft Start)
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UPS702
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(Ta＝25°C, unless otherwise specified)
SYMBOL
RATINGS
UNIT
Supply Voltage
V
CC
30
V
Input Voltage to Vin Pin
Vin
30
V
Input Voltage to FB Pin
V
FB
-0.3 ~ 6.2
V
Input Voltage to CS Pin
V
CS
-0.3 ~ 2.8
V
Junction Temperature
T
J
+150
°C
Operating Temperature
T
OPR
-40 ~ +125
°C
Storage Temperature
T
STG
-50 ~ +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.
OPERATING RANGE
PARAMETER
Supply Voltage
SYMBOL
V
CC
RATINGS
8.6 ~ 22
UNIT
V
ELECTRICAL CHARACTERISTICS
(Ta＝25°C, V
CC
=15V, unless otherwise specified)
PARAMETER
SUPPLY SECTION
Start Up Current
Supply Current with switch
UNDER-VOLTAGE LOCKOUT SECTION
Start Threshold Voltage
Min. Operating Voltage
Hysteresis
INTERNAL VOLTAGE REFERENCE
Reference Voltage
CONTROL SECTION
V
FB
Operating Level
Burst-Mode Out FB Voltage
Reduce-Frequency end FB Voltage
Burst-Mode Enter FB Voltage
Normal
Switch Frequency
Power-Saving
Duty Cycle
Frequency Hopping
Frequency Variation VS V
CC
Deviation
Frequency Variation VS Temperature
Deviation
Feedback Resistor
Soft-Start Time
PROTECTION SECTION
OVP threshold
OLP threshold
Delay Time Of OLP
OTP threshold
OVP Disable threshold
OLP Enable threshold
SYMBOL
I
STR
I
OFF
I
ON
V
THD(ON)
V
CC(MIN)
V
CC(HY)
V
REF
V
MIN
V
MAX
V
FB(OUT)
V
FB(END)
V
FB(IN)
F
(SW)
D
MAX
D
MIN
F
J(SW)
F
DV
F
DT
R
FB
T
SS
V
OVP1
V
OVP2
V
FB(OLP)
T
D-OLP
T
(THR)
V
SS(DEACT)
V
SS(ACT)
measured at pin V
FB
TEST CONDITIONS
V
CC
= V
CC(ON)
-0.1V
V
SS
= 0, I
FB
= 0
V
SS
= 4.8V, I
FB
= 0
13.5
7.5
MIN
TYP
22
7
7
14.2
8.2
6
6.5
MAX
45
9
9
15
9
UNIT
μA
mA
mA
V
V
V
V
V
V
V
V
V
kHz
kHz
%
%
kHz
%
%
kΩ
ms
V
V
V
ms
°C
V
V
6.3
0.5
6.7
4.4
V
CS
=0
V
CS
=0
V
CS
=0
V
FB
= 4V
Before enter burst mode
V
FB
=4.4V, V
CS
=0
V
FB
<0.5V
V
CC
=10 to 20V
T=-40 to 105°C
V
FB
=0V
C
SS
=0.47μF
V
SS
<3.5V,V
FB
>5V
V
SS
=4.8V, V
FB
=3V
V
CS
=0, SS OPEN
C
SS
=0.47μF
V
FB
>5V,
V
CC
= 22V
V
FB
>5V
16
9.9
21
11.2
19
28
4.9
62
135
4.1
5.4
1.7
1.6
1.5
68
74
±3
61
20
68
0
±1.5
75
40
80
±4.5
5
5
26
12.6
4.7
55
120
3.9
5.1
5.1
70
150
4.3
5.7
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UPS702
ELECTRICAL CHARACTERISTICS(Cont.)
LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
TEST CONDITIONS
CURRENT LIMITING SECTION
Peak Current Limitation
V
CS
V
FB
=4.4V
Threshold Voltage For I
VIN
=60μA
V
SENSE-L
I
VIN
=60μA
POWER MOS-TRANSISTOR SECTION
Drain-Source Breakdown Voltage
V
DSS
V
GS
=0V, I
D
=250μA
Turn-on voltage between gate and source
V
TH
V
DS
=V
GS
, I
D
=250μA
Drain-Source Diode Continuous Source
I
S
Current
Static Drain-Source On-State Resistance
R
DS(ON)
V
GS
=10V, I
D
=1A
V
DD
=350V, I
D
=2.0A
Rise Time
t
R
RG=25Ω (Note 1,2)
Fall Time
t
F
Notes: 1. Pulse Test: Pulse width≤300μs, Duty cycle≤2%
2. Essentially independent of operating temperature
MIN
TYP
0.86
0.77
MAX
1
UNIT
V
V
V
V
A
Ω
ns
ns
700
2
4
2
5.0
6.3
80
70
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