2001.Jul.21
800mA LDO REGULATOR
R1170X series
s
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.
s
FEATURES
qUltra-Low
Supply Current
• • • • • • • •
TYP. 80µA
qLow
Standby Current
• • • • • • • • • • •
TYP. 0.1µA
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
qBuilt-in
Current Limit Circuit
qBuilt-in
Thermal Shunt Circuit
qLow
Temperature-drift Coefficient of Output Voltage
• • • • • • • • •
TYP.±100ppm/°C
s
APPLICATIONS
qLocal
Power source for Notebook PC.
qLocal
Power source for portable appliances, cameras, and videos.
qLocal
Power source for equipment of battery-use.
qLocal
Power source for home appliances.
Rev. 1.10
-1-
s
BLOCK DIAGRAMS
R1170H Series
R1170D Series
5
-
+
V
DD
4
V
OUT
V
DD
6
V
DD
5
-
+
1
2
V
OUT
V
OUT
Vref
Current Limit
Vref
GND
2
Current Limit
GND
4
CE
1
CE
3
s
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
a
b
c
d
Contents
Package Type; H: SOT89-5, D: HSON-6P
Designation of Output Voltage(V
OUT
)
Stepwise setting with 0.1V increment in the range from 1.5V to 4.0V
Designation of option;
A: Built-in Chip Enable Circuit, Active at “L”
B: Built-in Chip Enable Circuit, Active at “H”
Designation of Taping Type;
T1 or T2 (SOT89-5), TR(HSON-6) (Refer to Taping Specifications)
s
PIN CONFIGURATION
q
SOT-89-5
5
4
Mark
Side
2
3
1
Rev. 1.10
-2-
q
HSON-6P
6
5
4
s
PIN DESCRIPTION
SOT89-5
Pin No.
1
2
3
4
5
HSON-6P
Pin No.
1
2
3
4
5
6
Symbol
CE or CE
GND
NC
V
DD
V
OUT
1
2
3
Description
Chip Enable Pin Voltage Regulator Output Pin
Ground Pin
No Connection
Input Pin
Voltage Regulator Output Pin
Symbol
V
OUT
V
OUT
CE or CE
GND
V
DD
V
DD
Description
Voltage Regulator Output Pin
Voltage Regulator Output Pin
Chip Enable Pin Voltage Regulator Output Pin
Ground Pin
Input Pin
Input Pin
s
ABSOLUTE MAXIMUM RATINGS
Item
Input Voltage
Input Voltage(CE or CE Input Pin)*
Note
Output Voltage
Output Current
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
T
opt
T
stg
Rating
Unit
7.0
V
-0.3 ~ V
IN
+0.3
V
-0.3 ~ V
IN
+0.3
V
1.2
A
Internally limited
°C
-40 ~ 85
°C
-55 ~ 125
Rev. 1.10
-3-
s
ELECTRICAL CHARACTERISTICS
q
R1170XxxxA
Item
Input Voltage
Supply Current1
Standby Current
Output voltage
Output Current
Load regulation
Dropout Voltage
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
Symbol
V
IN
Conditions
V
IN
-V
OUT
=1.0V
V
CE
=GND
V
IN
=V
CE
=6.0V
V
IN
-V
OUT
=1.0V
I
OUT
=100mA
V
IN
-V
OUT
=1.0V
V
IN
-V
OUT
=1.0V
1mA≤I
OUT
≤300mA
I
OUT
=300mA
I
OUT
=100mA
V
OUT
+0.5V≤V
IN≤
8.0V
f=1kHz,Ripple 0.5Vp-p
V
IN
-V
OUT
=1.0V
I
OUT
=10mA
-40°C
≤
Topt
≤
85°C
V
OUT
=0V
MIN.
(Topt=25°C)
TYP.
MAX.
6.0
80
160
0.1
x0.98
800
30
100
Unit
V
µA
I
SS1
Istb
V
OUT
I
OUT1
∆V
OUT
/
∆I
OUT
V
DIF
∆V
OUT
/
∆V
IN
RR
∆V
OUT
/
∆T
I
LIM
R
PU
V
CEH
V
CEL
T
TSD
T
TSR
1.0
x1.02
µA
V
mA
mV
Refer to Dropout Voltage Table
0.05
0.30
%/V
50
±100
40
2.50
dB
ppm
/°C
mA
MΩ
V
V
°C
°C
1.25
1.50
0.00
Junction Temperature
Junction Temperature
5.00
V
IN
0.25
150
120
Rev. 1.10
-4-
q
R1170xxxxB
Item
Input voltage
Supply Current1
Standby Current
Reference Voltage for
Adjustable Voltage Regulator
Output Current
Load regulation
Dropout Voltage
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
Symbol
Conditions
V
IN
I
SS1
V
IN
-V
OUT
=1.0V V
CE=
V
IN
Istb V
IN
=6.0V, V
CE
=GND
V
OUT
V
IN
-V
OUT
=1.0V
I
OUT
=100mA
I
OUT1
V
IN
-V
OUT
=1.0V
∆V
OUT
/ V
IN
-V
OUT
=1.0V
∆I
OUT
1mA≤I
OUT
≤300mA
V
DIF
I
OUT
=300mA
∆V
OUT
/ I
OUT
=100mA
∆V
IN
V
OUT
+0.5V≤V
IN≤
8.0V
RR
f=1kHz,Ripple 0.5Vp-p
∆V
OUT
/ -40°C≤Topt≤85°C
∆T
I
LIM
V
OUT
=0V
R
PD
V
CEH
V
CEL
T
TSD
Junction Temperature
T
TSR
Junction Temperature
MIN.
(Topt=25°C)
TYP.
MAX.
Unit
6.0
V
µA
80
160
1.0
µA
0.1
x1.02
V
mA
mV
x0.98
800
30
100
Refer to Dropout Voltage Table
0.05
0.30
%/V
50
±100
40
2.5
dB
ppm
/°C
mA
MΩ
V
V
°C
°C
1.25
1.5
0
5
V
IN
0.25
150
120
qDropout
Voltage by Output Voltage (Topt=25°C)
Output Voltage
Dropout Voltage (V)
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
1.8≤V
OUT
≤2.0
2.1≤V
OUT
≤2.4
2.5≤V
OUT
≤4.0
0.25
0.20
0.15
0.12
0.30
0.25
0.20
0.18
Rev. 1.10
-5-
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
