RT9287 Datasheet PDF - Richtek Technology
| Part Number | RT9287 | |
| Description | Boost Converter | |
| Manufacturers | Richtek Technology | |
| Logo |  |
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There is a preview and RT9287 download ( pdf file ) link at the bottom of this page. Total 13 Pages | ||
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Preliminary
RT9287
Boost Converter for OLED Power with Dual LDO
General Description
The RT9287 integrates a boost converter for OLED power
and a Dual LDO for camera image sensor power. To achieve
high efficiency, the boost converter optimizes its operating
frequency for small LC filters value and reduces the
operating current. Moreover, the internal soft-start function
reduces the inrush current.
For the Dual LDO part, it possesses functions of 2%
accuracy, dual channel, low dropout voltage
(240mV@300mA), low noise, low ground current and
low dropout regulator sourcing up to 300mA at each
channel. For battery-powered devices, it provides near
zero shutdown current. Moreover, it also integrates
functions such as current limiting, over temperature, output
short circuit, 27μA low ground current per LDO and
short circuit thermal folded back protection. When output
short circuit occurs, the RT9287 reduces its over
temperature protection trip point to provide maximum
safety to users. The RT9287 is available in WDFN-10L
3x3 package.
Ordering Information
RT9287-
Package Type
QW : WDFN-10L 3x3 (W-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
LDO Output Voltage : VOUT1/VOUT2
MG : 2.80V/1.80V
Note :
Richtek Pb-free and Green 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.
`100% matte tin (Sn) plating.
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.
DS9w28w7-w01.DAautgauSsthe20e0t47 U.com
Features
z Boost Converter
`VIN Operating Range : 2.7V to 5.5V
`Maximum Output Voltage Up to 20V
`Output Current up to 100mA at VOUT = 12V.
`Low Shutdown Supply Current
`Minimize the External Component
`Small LC Filter
`Internal Soft Start
z Dual LDO
`Wide Operating Voltage Ranges : 2.7V to 5.5V
`Low-Noise for RF Application
`No Noise Bypass Capacitor Required
`Fast Response in Line/Load Transient
`TTL-Logic-Controlled Shutdown Input
`Low Temperature Coefficient
`Dual LDO Outputs (300mA/300mA)
`Ultra-low Quiescent Current 27μA/LDO
`High Output Accuracy 2%
`Short Circuit Protection
`Thermal Shutdown Protection
`Current Limit Protection
`Short Circuit Thermal Folded Back Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Camera Phone
z OLED Power
Pin Configurations
(TOP VIEW)
VDD1 1
EN1 2
EN2 3
ENB 4
FB 5
GND
11
10 VLDO1
9 VLDO2
8 GND
7 VDD2
LX
WDFN-10L 3x3
www.richtek.com
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Preliminary
RT9287
Par amete r
Sy mbol
Test Condition
Min Typ Max Units
Dual LDO
Input Voltage
Dropout Voltage (Note 5)
Output Voltage Range
VLDO1,2 Accuracy
Line Regulation
Load Regulation
Current Limit
Quiescent Current
Shutdown Current
EN1,2 Threshold
Output Voltage TC
V DD 1
VDD = 2.7V to 5.5V
2.7 -- 5.5
V DR OP
IOUT = 150mA
IOUT = 300mA
-- 120 --
-- 240 --
V LDO1,
V LDO2
1.2 -- 3.6
ΔV IOUT = 1mA
−2 -- +2
ΔVLINE
VDD1 = (VLDO1,2 + 0.3V) to 5.5V
or VDD1 > 2.7V, whichever is
larger
--
-- 0.2
V
mV
mV
V
%
%
ΔVLOAD 1mA < IOUT < 300mA
-- -- 0.6 %
RLOAD = 1Ω
330 450 700
mA
IQ VEN1, 2 > 1.5V
-- 58 80 μA
ISHDN
VEN1, 2 < 0.4V
-- -- 1 μA
V IH
VDD = 2.7V to 5.5V, Power On
1.5 --
--
V
VIL VDD = 2.7V to 5.5V, Shutdown -- -- 0.4 V
-- 100 -- ppm/°C
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Shutdown Hysteresis
TSD
ΔTSD
ΔTSD
PSRR ILOAD = 10mA
PSRR ILOAD = 150mA
PSRR
f = 100Hz
f = 1kHz
f = 10kHz
f = 100Hz
f = 1kHz
f = 10kHz
-- 165
-- 40
-- 40
-- 65
-- 60
-- 50
-- 65
-- 50
-- 50
--
--
--
--
--
--
--
--
--
°C
°C
°C
dB
dB
dB
dB
dB
dB
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.
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard. The case point of θJC is on the expose pad for the WDFN package.
Note 5. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.
DS9287-01 August 2007
www.richtek.com
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for RT9287 electronic component. |
| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ RT9287.PDF Datasheet ] | |
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