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Электронный компонент: R1170D291B-T1

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2001.Jul.21
800mA LDO REGULATOR
R1170X series
Rev. 1.10 - 1 -
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OUTLINE
The R1170 Series are positive voltage regulator ICs by CMOS process. The R1170 Series have features of
high ripple rejection, low dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs
consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at
short mode, a chip enable circuit, and thermal-shunt circuit. Output Voltage of R1170 is fixed in the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolong the battery life. These regulators are remarkable improvement
on the current regulators in terms of ripple rejection, input transient response, and load transient response.
Maximum Output Current is large for its compact size.
Thus, the R1170 Series are suitable for various power sources for portable appliances.
Since the packages for these ICs are the SOT-89-5 package or HSON6, high density mounting of the ICs on
boards is possible.
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FEATURES
qUltra-Low Supply Current
TYP. 80A
qLow Standby Current
TYP. 0.1A
qOutput Current
MIN. 800mA(V
IN
=V
OUT
+1.0V)
qOutput Voltage
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V
qHigh Output Voltage Accuracy
2.0%
qLow Dropout Voltage
TYP. 0.12V(V
OUT
=3.0V, I
OUT
=300mA)
qLine Regulation
TYP. 0.05%/V
qSmall Package
SOT-89-5, HSON6
q
Built-in Current Limit Circuit
q
Built-in Thermal Shunt Circuit
q
Low Temperature-drift Coefficient of Output Voltage
TYP.
100ppm/
C
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APPLICATIONS
q
Local Power source for Notebook PC.
q
Local Power source for portable appliances, cameras, and videos.
q
Local Power source for equipment of battery-use.
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Local Power source for home appliances.
Rev. 1.10 - 2 -
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BLOCK DIAGRAMS
R1170H Series
R1170D Series
Vref
1
4
5
2
Current Limit
-
+
V
DD
CE
V
OUT
GND
V
DD
V
DD
Vref
3
6
1
4
Current Limit
-
+
CE
V
OUT
GND
5
2
V
OUT
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SELECTION GUIDE
The output voltage, the chip-enable polarity, the taping type can be selected at the user's request. The selection
can be made with the part number as follows;
R1170X XXXX-XX
Part Number
a b c d
Code
Contents
a
Package Type; H: SOT89-5, D: HSON-6P
b
Designation of Output Voltage(V
OUT
)
Stepwise setting with 0.1V increment in the range from 1.5V to 4.0V
c
Designation of option;
A: Built-in Chip Enable Circuit, Active at "L"
B: Built-in Chip Enable Circuit, Active at "H"
d
Designation of Taping Type;
T1 or T2 (SOT89-5), TR(HSON-6) (Refer to Taping Specifications)
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PIN CONFIGURATION
q SOT-89-5
5
4
1
2
3
Mark Side
Rev. 1.10 -3-
q
HSON-6P
6 5 4
1 2 3
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PIN DESCRIPTION
SOT89-5
Pin No.
Symbol
Description
1
CE or CE
Chip Enable Pin Voltage Regulator Output Pin
2
GND
Ground Pin
3
NC
No Connection
4
V
DD
Input Pin
5
V
OUT
Voltage Regulator Output Pin
HSON-6P
Pin No.
Symbol
Description
1
V
OUT
Voltage Regulator Output Pin
2
V
OUT
Voltage Regulator Output Pin
3
CE or CE
Chip Enable Pin Voltage Regulator Output Pin
4
GND
Ground Pin
5
V
DD
Input Pin
6
V
DD
Input Pin
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ABSOLUTE MAXIMUM RATINGS
Item
Symbol
Rating
Unit
Input Voltage
V
IN
7.0
V
Input Voltage(CE or CE Input Pin)*
Note
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
Rev. 1.10 - 4 -
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ELECTRICAL CHARACTERISTICS
q
R1170XxxxA
(Topt=25
C)
Item
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Input Voltage
V
IN
6.0
V
Supply Current1
I
SS1
V
IN
-V
OUT
=1.0V
V
CE
=GND
80
160
A
Standby Current
Istb
V
IN
=V
CE
=6.0V
0.1
1.0
A
Output voltage
V
OUT
V
IN
-V
OUT
=1.0V
I
OUT
=100mA
x0.98
x1.02
V
Output Current
I
OUT1
V
IN
-V
OUT
=1.0V
800
mA
Load regulation
V
OUT
/
I
OUT
V
IN
-V
OUT
=1.0V
1mA
I
OUT
300mA
30
100
mV
Dropout Voltage
V
DIF
I
OUT
=300mA
Refer to Dropout Voltage Table
Line regulation
V
OUT
/
V
IN
I
OUT
=100mA
V
OUT
+0.5V
V
IN
8.0V
0.05
0.30
%/V
Ripple Rejection
RR
f=1kHz,Ripple 0.5Vp-p
V
IN
-V
OUT
=1.0V
50
dB
Output Voltage
Temperature Coefficient
V
OUT
/
T
I
OUT
=10mA
-40
C
Topt
85
C
100
ppm
/
C
Short Current Limit
I
LIM
V
OUT
=0V
40
mA
Pull-up resistance for CE pin
R
PU
1.25
2.50
5.00
M
CE Input Voltage "H"
V
CEH
1.50
V
IN
V
CE Input Voltage "L"
V
CEL
0.00
0.25
V
Thermal Shutdown Detector
Threshold Temperature
T
TSD
Junction Temperature
150
C
Thermal Shutdown Released
Temperature
T
TSR
Junction Temperature
120
C
Rev. 1.10 -5-
q
R1170xxxxB
(Topt=25
C)
Item
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Input voltage
V
IN
6.0
V
Supply Current1
I
SS1
V
IN
-V
OUT
=1.0V V
CE=
V
IN
80
160
A
Standby Current
Istb
V
IN
=6.0V, V
CE
=GND
0.1
1.0
A
Reference Voltage for
Adjustable Voltage Regulator
V
OUT
V
IN
-V
OUT
=1.0V
I
OUT
=100mA
x0.98
x1.02
V
Output Current
I
OUT1
V
IN
-V
OUT
=1.0V
800
mA
Load regulation
V
OUT
/
I
OUT
V
IN
-V
OUT
=1.0V
1mA
I
OUT
300mA
30
100
mV
Dropout Voltage
V
DIF
I
OUT
=300mA
Refer to Dropout Voltage Table
Line regulation
V
OUT
/
V
IN
I
OUT
=100mA
V
OUT
+0.5V
V
IN
8.0V
0.05
0.30
%/V
Ripple Rejection
RR
f=1kHz,Ripple 0.5Vp-p
50
dB
Output Voltage
Temperature Coefficient
V
OUT
/
T
-40
C
Topt
85
C
100
ppm
/
C
Short Current Limit
I
LIM
V
OUT
=0V
40
mA
Pull-down resistance for CE pin
R
PD
1.25
2.5
5
M
CE Input Voltage "H"
V
CEH
1.5
V
IN
V
CE Input Voltage "L"
V
CEL
0
0.25
V
Thermal Shutdown Detector
Threshold Temperature
T
TSD
Junction Temperature
150
C
Thermal Shutdown Released
Temperature
T
TSR
Junction Temperature
120
C
q
Dropout Voltage by Output Voltage (Topt=25
C)
Dropout Voltage (V)
Output Voltage
V
OUT
(V)
TYP.
MAX.
V
OUT
=1.5
0.35
0.45
V
OUT
=1.6
0.30
0.35
V
OUT
=1.7
0.25
0.30
1.8
V
OUT
2.0
0.20
0.25
2.1
V
OUT
2.4
0.15
0.20
2.5
V
OUT
4.0
0.12
0.18