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RT9032 Schematic ( PDF Datasheet ) - Richtek

Teilenummer RT9032
Beschreibung Programmable Dual Output Linear Regulator
Hersteller Richtek
Logo Richtek Logo 




Gesamt 13 Seiten
RT9032 Datasheet, Funktion
®
RT9032
Programmable Dual Output Linear Regulator
General Description
Features
The RT9032 is a dual channels, low noise and low dropout
Wide Operating Voltage Ranges : 2.5V to 5.5V
voltage regulator souring up to 300mA at each channel.
Dual LDO Output
The output voltage range is from 1.1V to 3.3V by operating
Pin Programmable Output Voltage
voltage range from 2.5V to 5.5V.
Low-Noise for RF Application
The output voltages of the RT9032 can be programmed by
setting the voltage of P1 and P2. There are 9 different
voltage settings in one chip. User can choose output
voltages easily by setting P1, P2 to VDD, GND or floating.
The RT9032 offers 3% accuracy, low dropout (330mV
@300mA) and extremely low ground current, only 32μA
per LDO. The shutdown current is near to zero current
which is suitable for battery-powered device. Other
features include current limiting, over temperature
protection and output short circuit protection.
No Noise Bypass Capacitor Required
Fast Response in Line/Load Transient
Low Quiescent Current of 32μA/LDO
3% High Output Accuracy
Current Limiting Protection
Thermal Shutdown Protection
Short Circuit Protection
Tiny WDFN-8L 2x2 and WQFN-8L 1.6x1.6 (COL)
Packages
RoHS Compliant and Halogen Free
The RT9032 can operate stable with very small ceramic
output capacitors, reducing required board space and
Applications
Mobile Phone
component cost. The RT9032 is available in WDFN-8L
Smart Hand-Held Devices
2x2 and WQFN-8L 1.6x1.6 (COL) packages.
Digital Still Camera
Battery-Powered Equipments
Ordering Information
PCMCIA Cards
RT9032
Package Type
QW : WDFN-8L 2x2 (W-Type)
QWA : WQFN-8L 1.6x1.6 (COL) (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Pin Configurations
(TOP VIEW)
VIN 1
EN1 2
P2 3
P1 4
8 VOUT1
7 VOUT2
6 GND
9 5 EN2
Note :
Output Voltage
A : Combination A
B : Combination B
C : Combination C
D : Combination D
J : Combination J
Richtek products are :
` RoHS compliant and compatible with the current require-
WDFN-8L 2x2
VOUT1
8
VIN 1
7 VOUT2
EN1 2
6 P2
EN2 3
5 GND
4
P1
WQFN-8L 1.6x1.6 (COL)
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9032-03 August 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1






RT9032 Datasheet, Funktion
RT9032
Parameter
Output Voltage Discharge
Resistance in Shutdown
Output Voltage Temperature
Coefficient
Symbol
Test Conditions
VIN = 5V, EN1 = EN2 = GND
Enable Pin Input (EN1, EN2)
Logic-High
EN Threshold Voltage
VIH
Logic-Low VIL
VIN = 2.5V to 5.5V, Power On
VIN = 2.5V to 5.5V, Shutdown
Tri-State Input (P1, P2)
P1/P2 Termination Resistance from
input to VDD or GND for setting Hi,
Lo, Open States (Note 7)
Decision Time
TD
VIN = 2.5V to 5.5V Hi, Lo State
VIN = 2.5V to 5.5V Open State
Open pin with input loading
50pF (Including PAD & PCB
trace)
Protection
Current Limit
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
ILIM
TSD
ΔTSD
RLOAD = 1 Ω
Min Typ
-- 20
-- 100
1.5 --
-- --
--
100k
--
--
--
--
330 430
-- 170
-- 30
Max Unit
-- Ω
-- ppm/°C
--
V
0.4
1k
Ω
--
20 μs
600 mA
--
°C
--
Note 1. Stresses beyond those listed Absolute Maximum Ratingsmay cause permanent damage to the device. These are
stress ratings only, and 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 may
affect device reliability.
Note 2. θJA is measured at TA = 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3. θJC is
measured at the exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN - IOUT under no
load condition (IOUT = 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin
current.
Note 6. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV.
Note 7. Output voltage VOUT1/VOUT2 are configured by P1/P2 state when EN1 or EN2 go high. Subsequent changes to P1/P2
do not change VOUT1/VOUT2 unless power on reset by VIN or both of EN1 and EN2.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS9032-03 August 2012

6 Page









RT9032 pdf, datenblatt
RT9032
Outline Dimension
D2
D
L
E E2
SEE DETAIL A
1
eb
A
A3
A1
21
21
DETAIL A
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Symbol
A
A1
A3
b
D
D2
E
E2
e
L
Dimensions In Millimeters
Min
0.700
Max
0.800
0.000
0.050
0.175
0.250
0.200
0.300
1.950
2.050
1.000
1.250
1.950
2.050
0.400
0.650
0.500
0.300
0.400
Dimensions In Inches
Min
0.028
0.000
Max
0.031
0.002
0.007
0.010
0.008
0.012
0.077
0.081
0.039
0.049
0.077
0.081
0.016
0.026
0.020
0.012
0.016
W-Type 8L DFN 2x2 Package
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
12
is a registered trademark of Richtek Technology Corporation.
DS9032-03 August 2012

12 Page





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