300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator
LESHAN RADIO COMPANY, LTD.
LR9198
FEATURES
Ultra-low Noise for RF Application Ultra-Fast Response in Line/Load Transient <0.01µA Standby Current When Shutdown. Low Dropout:210mV@300mA Wide Operating Voltage Ranges:2V to 6V TTL-logic-Controlled Shutdown Input Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1µF Output Capacitor Required for Stability High Power Supply Rejection Ratio Custom Voltage Available Fast output discharge Available in 5-Lead SOT-23 and SC-70 Package
APPLICATIONS
Cellular and Smart Phones Battery-Powered Equipment Laptop, Palmtops, Notebook Computers
Hand-Held Instruments PCMCIA Cards MP3/MP4/MP5 Players Portable Information Appliances
DESCRIPTION
The LR9198 is designed for portable RF and wireless applications with demanding performance and space requirements. The LR9198 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The LR9198 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LR9198 consumes less than 0.01µA in shutdown mode and has fast turn-on time less than 50µs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the 5-lead SC-70 and SOT-23 packages.
ORDERING INFORMATION
LR9198 XX X X X XXX
TYPICAL APPLICATION
LR9198 28 AA
Package: RN: SOT-23-5 URN: SC-70-5
Features P: Standard (default, lead free)
VIN CIN
1 VIN
VOUT 5
LR9198
2 GND
VOUT COUT
C: Customized Enable Option:
Chip Enable
3 EN
NC 4
A: active high with internal 8 MΩ pull down
B: active low with internal 8 MΩ pull up
Output Voltage Accuracy A: ±1% B: ±2%
Application hints:
Output capacitor (COUT≥2.2uF) is
recommended in LR9198-1.2V application to
Output Voltage: 12: 1.2V 15: 1.5V 18:1.8V 25:2.5V
assure the stability of circuit.
28: 2.8V 30: 3.0V 33:3.3V 50:5.0V
CT: custom fixed output (50mV step)
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LESHAN RADIO COMPANY, LTD.
Absolute Maximum Rating (Note 1)
Input Supply Voltage (VIN) EN Input Voltage Output Voltage Output Current
-0.3V to +6V
-0.3V to +VIN -0.3V to VIN+0.3V
300mA
Maximum Junction Temperature
125°C
Operating Temperature Range (Note2) -40°C to 85°C
Storage Temperature Range
-65°C to 125°C
Lead Temperature (Soldering, 10s)
300°C
Package Information
SOT23-5/SC70-5 TOP VIEW
VIN 1
5 VOUT
MARKING
GND 2
Part Number LR9198-12 LR9198-15 LR9198-18 LR9198-25 LR9198-28 LR9198-30 LR9198-33 LR9198-50
EN 3
Top Mark E A Y W(Note3) EBYW ECYW EDYW EEYW EFYW EGYW EIYW
4 NC
Temp Range -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C
Thermal Resistance (Note 4)
Package SOT23-5 SC70-5
ӨJA 250°C/W 333°C/W
ӨJC 130°C/W
170°C/W
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LR9198 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C
to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: X: Product Code(LR9198:E) V: Voltage Code(1.2V:A, 1.5V:B, 1.8V:C, 2.5V:D, 2.8V:E, 3.0V:F, 3.3V:G, 5.0V:I) Y: Year of manufacturing(9:2009) W: Week of manufacturing(W:A-Z, a-z). Note 4: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
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LESHAN RADIO COMPANY, LTD.
Pin Description
PIN NAME
FUNCTION
1 VIN Power Input Voltage.
2 GND Ground.
Chip Enable Pin with two options.
3 EN A: active high with internal 8 MΩ pull down
B: active low with internal 8 MΩ pull up
4 NC No Connection.
5 VOUT Output Voltage.
Block Diagram
LR9198 XX XA
LR9198 XX XB
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LESHAN RADIO COMPANY, LTD.
Electrical Characteristics (Note 5)
(VIN=3.6V, EN=VIN, CIN=COUT=1µF, TA=25℃, unless otherwise noted.)
Parameter
Symbol
Conditions
MIN
Input Voltage Output Voltage Accuracy
(Note 6)
VIN ∆VOUT
VIN=3.6V, IOUT=1mA
2 -1 -2
Current Limit Quiescent Current
Dropout Voltage
Line Regulation(Note 7) Load Regulation(Note 8) Output Voltage(Note 9) Temperature Coefficient
ILIM IQ
VDROP
∆VLINE ∆VLOAD TCVOUT
RLOAD=1Ω VEN>1.2V, IOUT=0mA
IOUT=200mA, VOUT=2.8V
IOUT=300mA, VOUT=2.8V
VIN=3.6V to 5.5V IOUT=1mA
1mA