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RS1117 Series
1.0A Low Dropout Positive Voltage Regulator
RS1117 Series Pin Assignment
3-Lead Plastic SOT-89 Package Code: M Pin 1: ADJ/GND Pin 2: VOUT Pin 3: VIN 3-Lead Plastic SOT-223 Package Code: SJ Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 3-Lead Plastic TO-252 Package Code: J Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 3-Lead Plastic TO-220AB Package Code: E Pin 1: ADJ/GND Pin 2 & Tab: VOUT Pin 3: VIN 1 2 3
Features
* Low Dropout Voltage 1.4V (Max.) at 1.0A * Adjustable or Fixed Voltage (1.8V, 2.5V, 3.3V, 5V) * Over Current Protection * Thermal Overload Protection * Maximum Line Regulation 0.2% * Maximum Load Regulation 1.0% * Adjust Pin Current Less Than 120 uA
1
2
3
Tab
3 12 Tab
Applications
* SCSI-2 Active Termination * High Efficiency Linear Regulators * 5V to 3.3V Voltage Converter * Battery Charger * Battery Management Circuits For Notebook And Palmtop PCs * Core Voltage Supply: FPGA, PLD, DSP, CPU
Tab
1
2
3
General Description
The RS1117 is a 1A low-dropout positive voltage regulator. It is available in fixed and adjustable output voltage versions. Over current and thermal protection are integrated onto the chip. Output current will limit as while it reaches the pre-set current or temperature limit. The dropout voltage is specified at 1.4V Maximum at full rated output current. The RS1117 series provides excellent regulation over line, load and temperature variations.
Absolute Maximum Ratings
Parameter Input Voltage Power Dissipation Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 5 Sec HBM (Human Body Mode)
*: SOT-223: 0.9W(Max.), SOT-89: 0.6W(Max.), TO-252: 0.9W(Max.), TO-220: 2.1W(Max.)
Symbol VIN PD TOPR TSTG TLEAD
Maximum 13 Internally Limited * 0 To +125 -65 To +150 260 2
Units V W C C C KV/Min
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Dec, 2007
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Electrical Characteristics
RS1117-1.8
Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temp. Coefficient Temp. Stability RMS Output Noise Ripple Rejection Ratio Symbol VOUT REGLINE REGLOAD VDROPOUT IS IQ TC TS VN RA Test Conditions TJ=25 oC VIN=5V, IO=0A TJ=0 oC to 70 oC VIN=4.75V to 7V, IO=0A TJ=0 oC to 70 oC VIN=5V, IO=0A to 1A TJ=0 oC to 70 oC o o VO=3%, IO=1A TJ=0 C to 70 C o VIN=4.75V to 7V TJ=0 C to 70 oC VIN=5V, IO=0A to 1A TJ=0 oC to 70 oC VIN=4.75V to 7V, IO=0A to 1A VIN=5V, IO=100mA TJ=0 oC to 70 oC 10Hz f 10KHz TJ=25 oC VIN=5V, IO=1A TJ=0 oC to 70 oC Min. 1.782 1.764 1.0 60 Typ. 1.800 1.800 0.1 1.2 1.5 6.0 0.005 0.5 0.003 72 Max. Units 1.818 V 1.836 0.2 % 1.0 1.4 V A 13 mA %/ oC % %VO dB
RS1117-5.0
Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temp. Coefficient Temp. Stability RMS Output Noise Ripple Rejection Ratio Symbol VOUT REGLINE REGLOAD VDROPOUT IS IQ TC TS VN RA Test Conditions TJ=25 C VIN=7V, IO=0A TJ=0 oC to 70 oC VIN=7V to 9V, IO=0A TJ=0 oC to 70 oC VIN=7V, IO=0A to 1A TJ=0 oC to 70 oC o o VO=1%, IO=0A to 1A TJ=0 C to 70 C o VIN=7V to 10V TJ=0 C to 70 oC VIN=7V, IO=0A to 1A TJ=0 oC to 70 oC VIN=7V to 10V, IO=0A to 1A VIN=5V, IO=100mA TJ=0 oC to 70 oC 10Hz f 10KHz TJ=25 oC VIN=5V, IO=1A TJ=0 oC to 70 oC
o
Min. 4.950 4.900 1.0 60
Typ. 5.000 5.000 0.1 1.2 1.5 6.0 0.005 0.5 0.003 72
Max. Units 5.050 V 5.100 0.2 % 1.0 1.4 V A 13 mA %/ oC % %VO dB
RS1117-3.3
Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temp. Coefficient Temp. Stability RMS Output Noise Ripple Rejection Ratio Symbol VOUT REGLINE REGLOAD VDROPOUT IS IQ TC TS VN RA Test Conditions TJ=25 oC VIN=5V, IO=0A TJ=0 oC to 70 oC o o VIN=4.75V to 7V, IO=0A TJ=0 C to 70 C o VIN=5V, IO=0A to 1A TJ=0 C to 70 oC o o VO=1%, IO=0A to 1A TJ=0 C to 70 C o VIN=4.75V to 7V TJ=0 C to 70 oC VIN=5V, IO=0A to 1A TJ=0 oC to 70 oC VIN=4.75V to 7V, IO=0A to 1A VIN=5V, IO=100mA TJ=0 oC to 70 oC 10Hz f 10KHz TJ=25 oC VIN=5V, IO=1A TJ=0 oC to 70 oC Min. 3.270 3.234 1.0 60 Typ. 3.300 3.300 0.1 1.2 1.5 6.0 0.005 0.5 0.003 72 Max. Units 3.330 V 3.330 0.2 % 1.0 1.4 V A 13 mA %/ oC % %VO dB
RS1117-2.5
Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temp. Coefficient Temp. Stability RMS Output Noise Ripple Rejection Ratio Symbol VOUT REGLINE REGLOAD VDROPOUT IS IQ TC TS VN RA Test Conditions TJ=25 oC VIN=5V, IO=0A o o TJ=0 C to 70 C o VIN=4.75V to 7V, IO=0A TJ=0 C to 70 oC VIN=5V, IO=0A to 1A TJ=0 oC to 70 oC o o VO=1%, IO=0A to 1A TJ=0 C to 70 C o VIN=4.75V to 7V TJ=0 C to 70 oC VIN=5V, IO=0A to 1A TJ=0 oC to 70 oC VIN=4.75V to 7V, IO=0A to 1A VIN=5V, IO=100mA TJ=0 oC to 70 oC 10Hz f 10KHz TJ=25 oC VIN=5V, IO=1A TJ=0 oC to 70 oC Min. 2.475 2.450 1.0 60 Typ. 2.500 2.500 0.1 1.2 1.5 6.0 0.005 0.5 0.003 72 Max. Units 2.525 V 2.550 0.2 % 1.0 1.4 V A 13 mA %/ oC % %VO dB
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RS1117-ADJ
Parameter Reference Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Temp. Coefficient Adjust Pin Current Adjust Pin Current Change Temp. Stability Minimum Load Current RMS Output Noise Ripple Rejection Ratio Symbol VREF REGLINE REGLOAD VDROPOUT IS TC IADJ IADJ TS IO VN RA Test Conditions TJ=25 oC VIN=5V, IO=10mA o o TJ=0 C to 70 C o VIN=4.75V to 7V, IO=10mA TJ=0 C to 70 oC VIN=5V, IO=10mA to 1A TJ=0 oC to 70 oC o o VO=1%, IO=10mA to 1A TJ=0 C to 70 C o VIN=2.7V to 7V TJ=0 C to 70 oC VIN=2.75V to 7V, IO=10mA to 1A VIN=2.75V to 7V, IO=10mA to 1A TJ=0 oC to 70 oC VIN=2.75V to 7V, IO=10mA to 1A TJ=0 oC to 70 oC VIN=5V, IO=100mA TJ=0 oC to 70 oC VIN=5V 10Hz f 10KHz TJ=25 oC VIN=5V, IO=1A TJ=0 oC to 70 oC Min. 1.238 1.225 1.0 60 Typ. 1.250 1.250 0.1 1.2 1.5 0.005 55 0.2 0.5 5.0 0.003 72 Max. Units 1.262 V 1.275 0.2 % 1.0 1.4 V A %/ oC 120 uA 5.0 % 10 mA %VO dB
Line Regulation test circuit
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Characteristics Curve
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Applications Description
* Output Voltage Adjustment Like most regulators, RS1117 series regulate the output by comparing the output voltage to an internally generated reference voltage. On the adjustable version, the VREF is available externally as 1.25V between VOUT and ADJ. The voltage ratio formed by R1 and R2 should be set to conduct 10mA (minimum output load). The output voltage is given by the following equation: VOUT =VREF (1+R2/R1) + IADJ R2 On fixed versions of RS1117 series, the voltage divider is provided internally. * Thermal Protection RS1117 series have thermal protection which limits junction temperature to 150C. However, device functionality is only guaranteed to a maximum junction temperature of +125C. The power dissipation and junction temperature for RS1117 in all packages given by PD=(VIN - VOUT) IOUT, TJUNCTION=TAMBIENT+(PDxJA), Note: TJUNCTION must not exceed 125C * Current Limit Protection RS1117 series are protected against overload conditions. Current protection is triggered at typically 1.5A. * Stability And Load Regulation RS1117 series require a capacitor from VOUT to GND to provide compensation feedback to the internal gain stage. This is to ensure stability at the output terminal. Typically, a 47uF tantalum or 100uF aluminum electrolytic is sufficient. Note : It is important that the ESR for this capacitor does not exceed 0.5. The output capacitor does not have a theoretical upper limit and increasing its value will increase stability. COUT = 100 uF or more is typical for high current regulator design. RS1117 series load regulation are limited by the resistance of the wire connecting it to the load(RP). For the adjustable version, the best load regulation is accomplished when the top of the resistor divider(R1) is connected directly to the output pin of the RS1117 series. When so connected, RP is not multiplied by the divider ratio. For fixed output versions, the top of R1 is internally connected to the output and ground pin can be connected to low side of the load as a negative side sense if, so desired.
V IN
VIN
In ADJ
Out V REF I ADJ 10uA R2 R1
V OUT
VOUT =VREF (1+R2/R1) + IADJ R2
In
Adj
Out
RP Parasitic Line Resistance
R1
Connect R1 to Case
RL
R2
Connect R2 to Load
* Thermal Consideration The RS1117 series contain thermal limiting circuitry designed to protect itself for over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mention in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It contains junction-to-case, case-to-heat-sink interface and heat sink resistance itself. An additional heat sink is applied externally sometimes. It can increase the maximum power dissipation. For example, the equivalent junction temperature of 300mA output current is 115C without external heat sink. Under the same junction temperature IC can operates 500mA with an adequate heat sink. Therefore, to attach an extra heat sink is recommended. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. The bonding wires are appending paths. The former is the lowest resistance path. Proper mounting is required to ensure the best possible thermal flow this area of the package to the heat sink. Thermal compound at the case-to-heat-sink interface is strongly recommended. The case of all devices in this series is electrically connected to the output. Therefore, if the case of the device must be electrically isolated, a thermally conductive spacer can be used, as long its thermal resistance is considered. * Protection Diode (The figure is shown as Regulator with Reverse Diode Protection in advanced applications) In general operation, RS1117 series don't need any protection diodes. From the cross-section structure of RS1117 series, the output pin is connected to P+ substrate, and the input pin is connected to N- well. There is a parasitic reverse diode between them. It can handle microsecond surge currents of 5A to 10A. Even with large output capacitance, it is very difficult to get those values of surge currents in normal operation. Only with high value output capacitors, such as 1000uF. And with the input pin instantaneously shorted to ground, can damage occur. A crowbar circuit at the input of the RS1117 series can generate those kinds of currents, and a diode from output to input is recommended. Normal power supply cycling or even plugging and unplugging in the system will not generate currents large enough to do any damage.
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SOT-223 Dimension
Marking: DIM A B C D E F G H I a1 a2 Min. 2.90 6.70 3.30 0.60 *2.30 6.30 1.40 0.25 0.02 o *13 o 0 Max. 3.10 7.30 3.70 0.80 6.70 1.80 0.35 0.10 o 10
A
Pb Free Mark
Pb-Free: " . " Normal: None
(Note)
RS 1117-
SJ Product Series Control Code
(ADJ,1.8,2.5,3.3,5)
B 1 2 3
C
Date Code
Note: Green label is used for Pb-free packing Pin Style: 1.ADJ/GND 2.VOUT 3.VIN
D E F G H a1 I a2
3-Lead SOT-223 Plastic Surface Mounted Package Package Code: SJ
Material: * Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
*: Typical, Unit: mm
SOT-89 Dimension
C H
Marking:
Date Code RS 1 1 1 7 Control Code Pb Free Mark
Pb-Free: " . " (Note) Normal: None
ADJ(A),1.8(B),2.5(C) 3.3(D),5(E)
B
D 1 E G A 2 3 I
Product Series
Note: Green label is used for Pb-free packing Pin Style: 1.ADJ/GND 2.VOUT 3.VIN Material: * Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
F
DIM A B C D E F G H I
Min. 4.40 4.05 1.50 2.40 0.36 *1.50 *3.00 1.40 0.35
Max. 4.60 4.25 1.70 2.60 0.51 1.60 0.41
*: Typical, Unit: mm
3-Lead SOT-89 Plastic Surface Mounted Package Package Code: M
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TO-252 Dimension
A C
Marking:
Pb Free Mark
Pb-Free: ". " (Note) Normal: None
B L F G
D
RS 1117
J Product Series Control Code
ADJ(A),1.8(B),2.5(C) 3.3(D),5(E)
Date Code
Note: Green label is used for Pb-free packing
3 H E K 2 I 1 J
Pin Style: 1.ADJ/GND 2.VOUT 3.VIN Material: * Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
DIM A B C D E F G H I J K L
Min. 0.45 1.70 0.90 0.45 6.40 5.40 2.20 0.70 5.20 1.40
Max. 0.55 1.90 1.50 0.60 6.80 5.80 2.80 *2.30 0.90 0.90 5.50 1.60
*: Typical, Unit: mm
3-Lead TO-252 Plastic Surface Mount Package Package Code: J
TO-220AB Dimension
Marking:
A D B E F C
Pb Free Mark
Pb-Free: ". " (Note) Normal: None
RS 1117
E Product Series Control Code
ADJ(A),1.8(B),2.5(C) 3.3(D),5(E)
Date Code
H I G Tab P L J M 3 2 1 O N K
Note: Green label is used for Pb-free packing Pin Style: 1.ADJ/GND 2(Tab).VOUT 3.VIN Material: * Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
DIM A B C D E F G H I J K L M N O P
Min. 5.58 8.38 4.40 1.15 0.35 2.03 9.66 3.00 0.75 2.54 1.14 12.70 14.48
Max. 7.49 8.90 4.70 1.39 0.60 2.92 10.28 *16.25 *3.83 4.00 0.95 3.42 1.40 *2.54 14.27 15.87
*: Typical, Unit: mm
3-Lead TO-220AB Plastic Package Package Code: E
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Ordering Information
Part Number RS1117M-A RS1117M-B RS1117M-C RS1117M-D RS1117M-E RS1117SJ-A RS1117SJ-B RS1117SJ-C RS1117SJ-D RS1117SJ-E Output Voltage ADJ 1.8V 2.5V 3.3V 5.0V ADJ 1.8V 2.5V 3.3V 5.0V SOT-223 SOT-89 Package Part Number RS1117J-A RS1117J-B RS1117J-C RS1117J-D RS1117J-E RS1117E-A RS1117E-B RS1117E-C RS1117E-D RS1117E-E Output Voltage ADJ 1.8V 2.5V 3.3V 5.0V ADJ 1.8V 2.5V 3.3V 5.0V TO-220AB TO-252 Package
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Soldering Methods for Orister's Products
1. Storage environment: Temperature=10oC~35oC Humidity=65%15% 2. Reflow soldering of surface-mount devices
Figure 1: Temperature profile
tP TP Ramp-up TL Tsmax Temperature tL Critical Zone TL to TP
Tsmin tS Preheat
Ramp-down
25
t 25oC to Peak Time
Profile Feature Average ramp-up rate (TL to TP) Preheat - Temperature Min (Tsmin) - Temperature Max (Tsmax) - Time (min to max) (ts) Tsmax to TL - Ramp-up Rate Time maintained above: - Temperature (TL) - Time (tL) Peak Temperature (TP) Time within 5oC of actual Peak Temperature (tP) Ramp-down Rate Time 25oC to Peak Temperature 3. Flow (wave) soldering (solder dipping) Products Pb devices. Pb-Free devices.
Sn-Pb Eutectic Assembly <3 C/sec 100oC 150oC 60~120 sec <3oC/sec 183oC 60~150 sec 240 C +0/-5 C 10~30 sec <6oC/sec <6 minutes
o o o
Pb-Free Assembly <3oC/sec 150oC 200oC 60~180 sec <3oC/sec 217oC 60~150 sec 260oC +0/-5oC 20~40 sec <6oC/sec <8 minutes
Peak temperature 245oC 5oC 260 C +0/-5 C
o o
Dipping time 5sec 1sec 5sec 1sec
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Important Notice:
* All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of Orister Corporation. * Orister Corporation reserves the right to make changes to its products without notice. * Orister Corporation products are not warranted to be suitable for use in Life-Support Applications, or systems. * Orister Corporation assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
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