UNISONIC TECHNOLOGIES CO., LTD
UR1170
Preliminary
CMOS IC
800MA LDO REGULATOR
DESCRIPTION
The UTC
UR1170
is a typical LDO (linear regulator) with the
features of high output voltage accuracy, low supply current, low
ON-resistance, and high ripple rejection.
During operation of the UTC
UR1170,
the dropout voltage is
very low and the response of line transient and load transient are
very well.
Internally, there’re many functions of UTC
UR1170
which can
be seen in the block figure. There are a voltage reference unit, an
error amplifier, resistor-net for voltage setting, a current limit circuit,
and a chip enable circuit in each UTC
UR1170.
The UTC
UR1170
can be used as an ideal of the power supply
for hand-held communication equipment, such as: power source for
portable communication equipment, power source for electrical
appliances, for example, cameras, VCRs and camcorders and
power source for battery-powered equipment.
FEATURES
* Low standby current
* Ultra-Low supply current
* Output voltage (stepwise setting with a step of 0.1V in the range
of 1.2V~4.0V)
* Output current (MIN=800mA@V
IN
=V
OUT
+1.0V)
* Low dropout voltage
* Line regulation
* High output voltage accuracy
* Low temperature-drift coefficient of output voltage
* Built-in thermal shunt circuit
* Built-in current limit circuit
ORDERING INFORMATION
Ordering Number
Lead Free
UR1170xL-S08-T
UR1170xL-S08-R
UR1170xL-S08-R
Halogen Free
UR1170xG-S08-T
UR1170xG-S08-R
Package
SOP-8
SOP-8
Packing
Tube
Tape Reel
(1)Packing Type
(2)Package Type
(3)Lead Free
(4)Enable Threshold Level
(1) T: Tube, R: Tape Reel
(2) S08: SOP-8
(3) L: Lead Free, G: Halogen Free
(4) L: Low, H: High
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QW-R502-A31.a
UR1170
ABSOLUTE MAXIMUM RATING
PARAMETER
Preliminary
CMOS IC
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
7.0
V
Input Voltage(CE or CE Input Pin)
V
CE
-0.3~V
IN
+0.3
V
Output Voltage
V
OUT
-0.3~V
IN
+0.3
V
Output Current
I
OUT
1.2
A
Power Dissipation
P
D
Internally limited
Operating Temperature
T
OPT
-40~85
°C
Storage Temperature
T
STG
-55~125
°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.
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, unless otherwise specified)
SYMBOL
V
IN
I
SS1
I
STB
V
OUT
I
OUT1
∆V
OUT
/∆I
OUT
TEST CONDITIONS
MIN
TYP
80
0.1
MAX
6.0
160
1.0
x1.02
100
0.45
0.35
0.30
0.25
0.20
0.18
0.30
UNIT
V
µA
µA
V
mA
mV
V
V
V
V
V
V
%/V
dB
ppm
/°C
mA
MΩ
V
V
°C
°C
UR1170L
PARAMETER
Input Voltage
Supply Current1
Standby Current
Output Voltage
Output Current
Load Regulation
Dropout Voltage
V
DIF
Line Regulation
Ripple Rejection
Output Voltage
Temperature Coefficient
Short Current Limit
Pull-up resistance for CE pin
CE Input Voltage “H”
CE Input Voltage “L”
Thermal Shutdown Detector
Threshold Temperature
Thermal Shutdown Released
Temperature
∆V
OUT
/∆V
IN
RR
∆V
OUT
/∆T
I
LIM
R
PU
V
CEH
V
CEL
T
TSD
T
TSR
V
IN
-V
OUT
=1.0V, V
CE
=GND
V
IN
=V
CE
=6.0V
V
IN
-V
OUT
=1.0V, I
OUT
=100mA
x0.98
V
IN
-V
OUT
=1.0V
800
V
IN
-V
OUT
=1.0V, 1mA≤I
OUT
≤300mA
V
OUT
=1.5
V
OUT
=1.6
V
OUT
=1.7
I
OUT
=300mA
V
OUT
=1.8≤V
OUT
≤2.0
V
OUT
=2.1≤V
OUT
≤2.4
V
OUT
=2.5≤V
OUT
≤4.0
I
OUT
=100mA, V
OUT
+0.5V≤V
IN
≤8.0V
f=1kHz,Ripple 0.5V
P-P,
V
IN
-V
OUT
=1.0V
I
OUT
=10mA, -40°C
≤
T
A
≤
85°C
V
OUT
=0V
1.25
1.50
Junction Temperature
Junction Temperature
30
0.35
0.30
0.25
0.20
0.15
0.12
0.05
50
±100
40
2.50
5.00
0.25
150
120
UNISONIC TECHNOLOGIES CO., LTD
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3 of 6
QW-R502-A31.a
UR1170
UR1170H
PARAMETER
Input Voltage
Supply Current
Standby Current
Output Voltage
Output Current
Load Regulation
SYMBOL
V
IN
I
SS
I
STB
V
OUT
I
OUT
∆V
OUT
/∆I
OUT
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
TEST CONDITIONS
V
IN
-V
OUT
=1.0V, V
CE
=V
IN
V
IN
=6.0V, V
CE
=GND
V
IN
-V
OUT
=1.0V, I
OUT
=100mA
V
IN
-V
OUT
=1.0V
V
IN
-V
OUT
=1.0V, 1mA≤IO
UT
≤300mA
V
OUT
=1.5
V
OUT
=1.6
V
OUT
=1.7
I
OUT
=300mA
V
OUT
=1.8≤V
OUT
≤2.0
V
OUT
=2.1≤V
OUT
≤2.4
V
OUT
=2.5≤V
OUT
≤4.0
I
OUT
=100mA, V
OUT
+0.5V≤V
IN
≤8.0V
f=1kHz,Ripple 0.5Vp-p
-40°C≤T
OPT
≤
85°C
V
OUT
=0V
1.25
1.5
0.25
Junction Temperature
Junction Temperature
150
120
MIN
TYP
80
0.1
x0.98
800
30
0.35
0.30
0.25
0.20
0.15
0.12
0.05
50
±100
40
2.5
5
MAX
6.0
160
1.0
x1.02
100
0.45
0.35
0.30
0.25
0.20
0.18
0.30
UNIT
V
µA
µA
V
mA
mV
V
V
V
V
V
V
%/V
dB
ppm
/°C
mA
MΩ
V
V
°C
°C
Dropout Voltage
V
DIF
Line Regulation
Ripple Rejection
Output Voltage
Temperature Coefficient
Short Current Limit
Pull-down resistance for CE
pin
CE Input Voltage “H”
CE Input Voltage “L”
Thermal Shutdown Detector
Threshold Temperature
Thermal Shutdown Released
Temperature
∆V
OUT
/∆V
IN
RR
∆V
OUT
/∆T
I
LIM
R
PD
V
CEH
V
CEL
T
TSD
T
TSR
UNISONIC TECHNOLOGIES CO., LTD
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QW-R502-A31.a
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