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RT9017-20GBR

P1-P3P4-P6P7-P9P10-P12
RT9017
1
DS9017-05 April 2011 www.richtek.com
500mA Peak, Thermal Folded Back CMOS LDO Regulator
General Description
The RT9017 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9017 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 RT9017 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices. The
RT9017 consumes less than 0.01μA in shutdown mode
and has fast turn-on time less than 50μs. RT9017 is short
circuit thermal folded back protected. RT9017 lowers its
OTP trip point from 165°C to 110°C
when output short
circuit occurs (V
OUT
< 0.4V) providing maximum safety to
end users. The other features include ultra low dropout
voltage, high output accuracy, current limiting protection,
and high ripple rejection ratio. Available in the SOT-23-3,
SOT-23-5 and WDFN-6L 2x2 packages, the RT9017 also
offers a range of 1.5V to 3.5V with 0.1V per step.
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
z PCMCIA Cards
z Portable Information Appliances
Ordering Information
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
zz
zz
z
Short Circuit Thermal Folded Back Protection
zz
zz
z Low-Noise for RF Application
zz
zz
z Fast Response in Line/Load Transient
zz
zz
z Quick Start-Up (Typically 50
μμ
μμ
μs)
zz
zz
z 0.01
μμ
μμ
μA Standby Current When Shutdown
zz
zz
z Low Dropout : 380mV @ 500mA
zz
zz
z Wide Operating Voltage Ranges : 2.5V to 5.5V
zz
zz
z TTL-Logic-Controlled Shutdown Input
zz
zz
z Low Temperature Coefficient
zz
zz
z Current Limiting Protection
zz
zz
z Thermal Shutdown Protection
zz
zz
z Only 1
μμ
μμ
μF Output Capacitor Required for Stability
zz
zz
z High Power Supply Rejection Ratio
zz
zz
z Custom Voltage Available
zz
zz
z RoHS Compliant and 100% Lead (Pb)-Free
Pin Configurations
(TOP VIEW)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
SOT-23-3
GND VOUT
VIN
2
3
EN
GND
NC
NC
VOUTVIN
5
4
1
2
3
6
7
WDFN-6L 2x2
RT9017-
Package Type
V : SOT-23-3
B : SOT- 23-5
BR : SOT- 23-5 (R-Type)
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
15 : 1.5V
16 : 1.6V
:
34 : 3.4V
35 : 3.5V
1H : 1.85V
2H : 2.85V
RT9017
2
DS9017-05 April 2011www.richtek.com
Function Block Diagram
Functional Pin Description
Pin Name Pin Function
EN
Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100kΩ
resistor connected to GND when the control signal is floating.
NC No Internal Connection.
GND Ground.
VOUT Output Voltage.
VIN Input Voltage.
Typical Application Circuit
SOT-23-5 (R-Type)SOT-23-5
VIN
GND
VOUT
RT9017
C
OUT
1uF
C
IN
1uF
V
IN
V
OUT
EN
Chip Enable
EN
Current-Limit
and
Thermal
Protection
MOS Driver
-
+
VOUT
Shutdown
and
Logic Control
VIN
Error
Amplifier
V
REF
GND
EN NC
VOUTVIN
GND
23
54
VIN GND
NCVOUT
EN
23
54
RT9017
3
DS9017-05 April 2011 www.richtek.com
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 6V
z Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-3 -------------------------------------------------------------------------------------------------------------------- 400mW
SOT-23-5 -------------------------------------------------------------------------------------------------------------------- 400mW
WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 606mW
z Package Thermal Resistance (Note 2)
SOT-23-3, θ
JA
--------------------------------------------------------------------------------------------------------------- 250°C/W
SOT-23-5, θ
JA
--------------------------------------------------------------------------------------------------------------- 250°C/W
WDFN-6L 2x2, θ
JA
--------------------------------------------------------------------------------------------------------- 165°C/W
z Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 4)
z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.5V to 5.5V
z Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C to 125°C
z Ambient Temperature Range --------------------------------------------------------------------------------------------
−40°C to 85°C
Electrical Characteristics
(V
IN
= V
OUT
+ 1V, C
IN
= C
OUT
= 1μF, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage Accuracy ΔV
OUT
I
OUT
= 1mA −2 -- +2 %
Current Limit I
LIM
R
LOAD
= 1Ω 530 -- -- mA
Quiescent Current I
Q
V
EN
>= 1.2V,
I
OUT
= 0mA
-- 90 130 μA
I
OUT
= 300mA, V
OUT
> 2.8V -- 220 --
Dropout Voltage (Note 5) V
DROP
I
OUT
= 500mA, V
OUT
> 2.8V -- 380 --
mV
Line Regulation ΔV
LINE
V
IN
= (V
OUT
+ 1V) to 5.5V,
I
OUT
= 1mA
-- -- 0.3 %
Load Regulation ΔV
LOAD
1mA < I
OUT
< 500mA -- -- 0.6 %
Standby Current I
STBY
V
EN
= GND, Shutdown -- 0.01 1 μA
EN Input Bias Current I
IBSD
V
EN
= GND or V
IN
-- 0 100 nA
Logic-Low Voltage V
IL
V
IN
= 3V to 5.5V, Shutdown -- -- 0.4
EN Threshold
Logic-High Voltage V
IH
V
IN
= 3V to 5.5V, Start-Up 1.2 -- --
V
f = 100Hz -- −60 --
Power Supply
Rejection Rate
f = 10kHz
PSRR C
OUT
= 1μF, I
OUT
= 100mA
-- −30 --
dB
Thermal Shutdown Temperature T
SD
-- 165 -- °C
Thermal Shutdown Temperature
Hysteresis
ΔT
SD
-- 30 -- °C
Thermal Folded Back -- 110 -- °C
P1-P3P4-P6P7-P9P10-P12

RT9017-20GBR

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Buy RT9017-20GBR
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Description:
IC REG LINEAR 2V 500MA SOT23-5R
Lifecycle:
New from this manufacturer.
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