R1173x Series
1A LDO with/without Adjust pin
The R1173x Series are CMOS-based LDO regulators featuring 1A output. R1173x offers almost the same basic performances as the
R1172x Series. But R1173x offers an excellent load regulation. While the output voltage is internally set in the R1172x Series, the
R1173x Series is available in two versions: standard version in which the output voltage is internally set and the adjusted version in
which it is set with external resistors. For this reason, when the output voltage is not determined yet, the adjusted version can be
used for advanced production. After the final determination of the voltage is made, it can be replaced with the standard version.
FEATURES
•
Supply Current (I
SS
) ················· Typ. 60μA (V
IN
=V
SET
+1.0V)
•
Standby Current (I
standby
) ·········· Typ. 0.1μA (V
IN
=6.0V, CE="L")
•
Dropout Voltage (V
DIF
) ············· Typ. 0.05V (I
OUT
=300mA, V
SET
=2.8V)
•
•
•
Typ. 0.18V (I
OUT
=1A, V
SET
=2.8V)
Ripple Rejection (RR)·············· Typ. 70dB (f=1kHz, V
SET
≤
4.0V)
Typ. 60dB (f=1kHz, V
SET
>
4.0V)
Input Voltage Range (V
IN
) ········ 1.4V to 6.0V
Output Voltage Range (V
OUT
)··· 0.8V to 5.0V (Internally fixed),
Adjustable by external resistors (001B/D)
(Feedback voltage : 1.0V)
•
Output Voltage Accuracy ················± 2%
•
Temp. coeff. of Output Voltage ······· Typ.
±
100ppm/°C
•
Line Regulation······························· Typ. 0.05%/V
•
Load Regulation ····························· Typ. -2mV (I
OUT
=300mA)
•
•
•
•
•
•
Typ. -3mV (I
OUT
=1A)
Fold-back Protection Circuit ··········· Current limit Typ. 250mA
Inrush Current Limit Circuit············· Typ. 500mA
Thermal Shutdown Circuit ·············· Stops at 150°C
Auto-discharge Function················· D Version
Packages········································ SOT-89-5, HSON-6, HSOP-6J
Ceramic capacitors can be used. ··· 4.7μF or more (V
SET
≥
1.0V)
BLOCK DIAGRAMS
R1173xxx1B
(Without Auto-discharge function)
V
DD
V
OUT
V
DD
R1173xxx1D
(With Auto-discharge function)
V
OUT
V
DD
R1173x001B
V
OUT
ADJ
V
DD
R1173x001D
V
OUT
ADJ
Vref
Current Limit
Thermal Shutdown
(With ADJ, Without Auto-discharge function) (With ADJ, With Auto-discharge function)
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
CE
GND
CE
GND
CE
GND
CE
GND
SELECTION GUIDES
Halogen Free
Package
SOT-89-5
HSON-6
HSOP-6J
Q'ty per Reel
Part No.
1,000 pcs R1173H.xx.1.
∗
-T1-FE
3,000 pcs R1173D.xx.1.
∗
-TR-FE
1,000 pcs R1173S.xx.1.
∗
-E2-FE
.xx.
: Specify the output voltage within the range of 0.8V (.08.) to 5.0V (.50.)
in 0.1V steps.
(For the version with ADJUST,
.xx.
is fixed at.00.)
: Select from (.B.) without auto-discharge function or
.∗
(.D.) with auto-discharge function.
PACKAGES (Top View)
SOT-89-5
5
4
TYPICAL CHARACTERISTIC
HSOP-6J
6
5
4
HSON-6
6
5
∗
4
R1173x301x
250
Dropout Voltage V
DIF
(mV)
Dropout Voltage vs. Output Current
85°C
25°C
-40°C
200
150
100
50
0
1
2
3
1
2
3
1
2
3
1
2
3
4
5
ADJ or NC
GND
CE
V
DD
V
OUT
1
2
3
4
5
6
V
OUT
∗∗
V
OUT
∗∗
ADJ or NC
GND
CE
V
DD
1
2
3
4
5
6
V
OUT
GND
∗∗
ADJ or NC
CE
GND
∗∗
V
DD
0
200
400
600
800
Output Current I
OUT
(mA)
1000
∗)
The tab and tab suspension leads on back side are substrate level (GND).
∗∗)
The V
OUT
pin and GND pin must be wired each other when it is mounted on board.
APPLICATIONS
•
Power source for hand-held communication equipment, cameras, and VCRs
•
Power source for home appliances and digital home appliances
No.EK-123-121001
•
Power source for laptop personal computers
•
Power source for battery-powered equipment
CMOS LDO Regulator
1. The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest
information thereon.
2. The materials in this document may not be copied or otherwise reproduced in whole or in part
without prior written consent of Ricoh.
3. Please be sure to take any necessary formalities under relevant laws or regulations before
exporting or otherwise taking out of your country the products or the technical information
described herein.
4. The technical information described in this document shows typical characteristics of and
example application circuits for the products. The release of such information is not to be
construed as a warranty of or a grant of license under Ricoh's or any third party's intellectual
property rights or any other rights.
5. The products listed in this document are intended and designed for use as general electronic
components in standard applications (office equipment, telecommunication equipment,
measuring instruments, consumer electronic products, amusement equipment etc.). Those
customers intending to use a product in an application requiring extreme quality and reliability,
for example, in a highly specific application where the failure or misoperation of the product
could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system,
traffic control system, automotive and transportation equipment, combustion equipment, safety
devices, life support system etc.) should first contact us.
6. We are making our continuous effort to improve the quality and reliability of our products, but
semiconductor products are likely to fail with certain probability. In order to prevent any injury to
persons or damages to property resulting from such failure, customers should be careful enough
to incorporate safety measures in their design, such as redundancy feature, firecontainment
feature and fail-safe feature. We do not assume any liability or responsibility for any loss or
damage arising from misuse or inappropriate use of the products.
7. Anti-radiation design is not implemented in the products described in this document.
8. Please contact Ricoh sales representatives should you have any questions or comments
concerning the products or the technical information.
Halogen Free
For the conservation of the global environment, Ricoh is advancing the decrease of the negative environmental impact material.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
Basically after Apr. 1, 2012, we will ship out the Power Management ICs of the Halogen Free products only. (Ricoh Halogen Free products are
also Antimony Free.)
RICOH COMPANY, LTD.
Electronic Devices Company
http://www.ricoh.com/LSI/
RICOH COMPANY, LTD.
Electronic Devices Company
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