RT9170-33PV Richtek Technology Corporation, RT9170-33PV Datasheet

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RT9170-33PV

Manufacturer Part Number
RT9170-33PV
Description
Manufacturer
Richtek Technology Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
RT9170-33PV
Manufacturer:
RICOH
Quantity:
45 000
Part Number:
RT9170-33PV
Manufacturer:
RICHTEK/立锜
Quantity:
20 000
300mA, 15 μ μ μ μ μ A Quiescent Current CMOS LDO Regulator
General Description
The RT9170 is CMOS ultra low quiescent current and low
dropout (ULDO) regulators. The devices are capable of
supplying 300mA of output current continuously.
The RT9170's performance is optimized for battery-
powered systems to deliver 15μA ultra low quiescent
current and extremely low dropout voltage. Regulator
ground current increases only slightly in dropout, further
prolonging the battery life. The other features include ultra
low dropout voltage, high output accuracy, current limiting
protection, and high ripple rejection ratio.
The devices are available in fixed output voltages range of
1.2V to 3.3V with 0.1V per step. The RT9170 regulators
are available in
packages.
Ordering Information
Note :
RichTek Pb-free and Green products are :
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
DS9170-11 March 2007
RT9170-
RoHS compliant and compatible with the current require-
Suitable for use in SnPb or Pb-free soldering processes.
100%matte tin (Sn) plating.
ments of IPC/JEDEC J-STD-020.
SOT-23-3, SOT-23-5
Package Type
V: SOT-23-3
B: SOT-23-5
X : SOT-89
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
Output Voltage
12 : 1.2V
13 : 1.3V
32 : 3.2V
33 : 3.3V
:
cial Standard)
and 3-lead SOT-89
Features
Applications
Pin Configurations
Ultra-Low Quiescent Current (Typically 15μ μ μ μ μ A)
Guaranteed 300mA Output Current
Low Dropout : 240mV at 300mA
Wide Operating Voltage Ranges : 2V to 5.5V
Fast Transient Response
Tight Load and Line Regulation
TTL-Logic-Controlled Enable Input
Current Limiting & Thermal Protection
Only 1μ μ μ μ μ F Output Capacitor Required for Stability
High Power Supply Rejection Ratio
Custom Voltage Available
RoHS Compliant and 100% Lead (Pb)-Free
Cellular Phones and Pagers
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
GND
1
SOT-23-3
VIN
3
VOUT
2
GND
1
(TOP VIEW)
SOT-89
(TAB)
VIN
2
VOUT
3
GND
EN
5
1
SOT-23-5
RT9170
www.richtek.com
VIN VOUT
2
NC
4
3
1

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RT9170-33PV Summary of contents

Page 1

... A Quiescent Current CMOS LDO Regulator General Description The RT9170 is CMOS ultra low quiescent current and low dropout (ULDO) regulators. The devices are capable of supplying 300mA of output current continuously. The RT9170's performance is optimized for battery- powered systems to deliver 15μA ultra low quiescent current and extremely low dropout voltage ...

Page 2

... RT9170 Function Block Diagram EN www.richtek.com 2 V VIN VOUT RT9170- CB 1uF Chip Enable EN GND Pin Name CB RT9170 VIN 3 VOUT 1 GND Current Limit + & - Thermal Shutdown V OUT C OUT 1uF Pin Function Power Input Voltage Output Voltage Ground Chip Enable (Active Low) No Connection VIN ...

Page 3

... Enable 5.5V, Shutdown IH IN PSRR f = 1kHz 1μF OUT T SD 0.4W 0.4W − 65°C to 150°C − 40°C to 125°C Min Typ −2 -- 300 -- -- 15 = 0mA -- 240 −0.3 0.018 -- 0.01 -- 0 − 150 RT9170 Max Units + μ +0.3 %/V 0.04 %/mA μ °C -- www.richtek.com 3 ...

Page 4

... RT9170 Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability ...

Page 5

... 1uF (Ceramic) OUT 0 2 2.5 3 3.5 4 Supply Voltage (V) Output Voltage vs. Supply Voltage 2.55 2.53 2.51 2. 2.5V OUT C = 1uF (Ceramic) 2. 1uF (Ceramic) OUT I = 1mA LOAD 2.45 2.5 3 3.5 4 Supply Voltage (V) RT9170 0.2 0.25 0.3 No Load 4.5 5 5.5 4.5 5 5.5 www.richtek.com 5 ...

Page 6

... RT9170 Load Regulation Deviation vs. Temperature 0 -0.0005 -0.001 -0.0015 -0.002 -0.0025 -0.003 -0.0035 -0.004 V = 2.5V OUT -0.0045 -35 - Temperature PSRR 3. 2.5V OUT - 1uF (Ceramic) OUT - 10mA LOAD -30 -40 -50 -60 -70 10 100 1K Frequency (Hz) Enable Respone 3.3V 6 OUT C = 1uF (Ceramic 1uF (Ceramic) OUT I = 300mA LOAD ...

Page 7

... OUT 200 100 0 -100 -200 -300 Times (2.5ms/Div) DS9170-11 March 2007 C = 1uF (Ceramic 1uF (Ceramic) OUT ≈ 1uF (Ceramic 1uF (Ceramic) OUT RT9170 Line Transient Response 2.5V OUT OUT 25° OUT 4 3 ≈ 100 0 -100 Time (0.5ms/Div) = 1uF (Ceramic) = 250mA ≈ ...

Page 8

... DROPOUT IN OUT DS(ON) Current Limit The RT9170 monitors and controls the PMOS' gate voltage, limiting the output current to 0.3A (min). The output can be shorted to ground for an indefinite period of time without damaging the part. Short-Circuit Protection The device is short circuit protected and in the event of a peak over-current condition, the short-circuit control loop will rapidly drive the output PMOS pass element off ...

Page 9

... ESR is maximum. Thermal Considerations The RT9170 series can deliver a current 300mA over the full operating junction temperature range. However, the maximum output current must be derated at higher ambient temperature to ensure the junction temperature does not exceed 125° ...

Page 10

... RT9170 The final operating junction temperature for any set of conditions can be estimated by the following thermal equation : ) / θ (MAX) J (MAX Where T is the maximum junction temperature of J (MAX) the die (125° C) and T is the maximum ambient A temperature. The junction to ambient thermal resistance (θ ...

Page 11

... SOT-23-3 Surface Mount Package RT9170 H L Dimensions In Inches Min Max 0.035 0.051 0.000 0.006 0.055 0.071 0.014 0.020 0.102 0.118 0.106 0.122 0.071 0.079 ...

Page 12

... RT9170 Symbol www.richtek.com Dimensions In Millimeters Min Max 0.889 1.295 0.000 0.152 1.397 1.803 0.356 0.559 2.591 2.997 2.692 3.099 0.838 1.041 0.080 0.254 0.300 0.610 SOT-23-5 Surface Mount Package H L Dimensions In Inches Min Max 0.035 0.051 0.000 0.006 0.055 0.071 0.014 ...

Page 13

... No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com Dimensions In Inches Min Max 0.055 0.063 0.014 0.019 0.094 0.102 0.016 0.021 0.155 0.167 0.031 0.047 0.173 0.181 0.055 0.069 0.057 0.061 0.014 0.017 RT9170 www.richtek.com 13 ...

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