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PDF RT9296 Data sheet ( Hoja de datos )
| Número de pieza | RT9296 | |
| Descripción | Synchronous Boost Converter | |
| Fabricantes | Richtek Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9296 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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RT9296
Synchronous Boost Converter with LDO Controller
General Description
Features
The RT9296 is a synchronous boost converter, which is
based on a fixed frequency pulse-width-modulation (PWM)
controller using a synchronous rectifier to obtain maximum
efficiency. The converter provides a power supply solution
for products powered by a variety of batteries such as
single cell, dual cell alkaline, NiMH and NiCd battery. At
light load currents, the converter enters the power save
mode to maintain a high efficiency over a wide load current
range.
The output voltage can be programmed by an external
resistor divider, or be a fixed voltage. Moreover, the
converter can be disabled to the minimize battery drain.
During shutdown, the load is completely disconnected
from the battery. The maximum peak current in the boost
switch is limited to 2A for current limit.
For the RT9296, a low-EMI (anti-ringing) mode is
implemented (by trim option) to reduce ringing of the
inductor phase pin when the converter enters the
z True Load Disconnection During Shutdown
z Internal Synchronous Rectifier
z Up to 96% Efficiency
z Current Mode PWM Operation with Internal
Compensation
z Low Start-Up Voltage
z Low Quiescent Current
z Internal Soft-Start Control
z Linear Controller
z Low EMI Converter (Anti-Ringing)
z Power Save Mode for Improved Efficiency at Light
Load Current
z Over-Current Protection
z Short Circuit Protection
z Over Temperature Protection
z Over Voltage Protection
z Small 10-Lead WDFN Package
z RoHS Compliant and Halogen Free
discontinuous conduction mode. Moreover, a linear
controller is built-in in the chip for linear regulator
application.
Applications
z All One-Cell, Two-Cell and Three-Cell Alkaline, NiCd,
NiMH and Single-Cell Li Batteries
Ordering Information
RT9296(- )
z Hand-Held Devices
z WLED Flash Light
Package Type
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Boost VOUT
Default : Adjustable
33 : 3.3V
50 : 5.0V
Richtek products are :
Pin Configurations
(TOP VIEW)
EN 1
VOUT 2
FB/NC 3
DRV 4
GND 5
10 PGND
9 LX
8 PGOOD
7 FBL
11 6 VBAT
WDFN-10L 3x3
` 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.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9296-01 April 2011
www.richtek.com
1
1 page  
RT9296
Parameter
Protection
Over-Temperature Protection
Over-Temperature Hysteresis
Over-Current Protection
Over-Voltage Protection
Power MOSFET
N-MOSFET ON-Resistance
P-MOSFET ON-Resistance
Linear Controller
FBL Reference Voltage
Output Impedance of Linear
Controller
Symbol
Test Conditions
TOTP
T OTP_ Hys
IOCP
VOVP
VOUT = 3.3V
RDS(ON)_N VOUT = 3.3V
RDS(ON)_P VOUT = 3.3V
VFBL
RON_LBO VLBI = 0V
Min Typ Max Unit
-- 170 --
-- 40 --
1.6 2 2.4
5.5 -- 6.5
°C
°C
A
V
-- 260 -- mΩ
-- 290 -- mΩ
0.19 0.2 0.21 V
-- 2 -- kΩ
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. θJA is measured in the natural convection at TA = 25°C on a high effective four layers thermal conductivity test board of
JEDEC 51-7 thermal measurement standard. The case point of θJC is on the expose pad for the WDFN package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
DS9296-01 April 2011
www.richtek.com
5
5 Page 
Outline Dimension
RT9296
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 Max
0.700
0.800
0.000
0.050
0.175
0.250
0.180
0.300
2.950
3.050
2.300
2.650
2.950
3.050
1.500
1.750
0.500
0.350
0.450
Dimensions In Inches
Min
0.028
Max
0.031
0.000
0.002
0.007
0.010
0.007
0.012
0.116
0.120
0.091
0.116
0.104
0.120
0.059
0.069
0.020
0.014
0.018
W-Type 10L DFN 3x3 Package
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing)
5F, No. 95, Minchiuan Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)86672399 Fax: (8862)86672377
Email: [email protected]
Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit
design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be
guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek.
DS9296-01 April 2011
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9296.PDF ] | |
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