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LMN200B02
200 mA LOAD SWITCH FEATURING PRE-BIASED PNP TRANSISTOR AND N-MOSFET
WITH GATE PULL DOWN RESISTOR
General Description
LMN200B02 is best suited for applications where the load needs to
be turned on and off using control circuits like micro-controllers,
comparators etc. particularly at a point of load. It features a
discrete pass transistor with stable V
which does not
CE(SAT)
depend on the input voltage and can support continuous maximum
current of 200 mA . It also contains a discrete N-MOSFET that can
be used as control. This N-MOSFET also has a built-in pull down
resistor at its gate. The component can be used as a part of a
circuit or as a stand alone discrete device.
1
2
Features
• Voltage Controlled Small Signal Switch
• N-MOSFET with Gate Pull-Down Resistor
• Surface Mount Package
• Ideally Suited for Automated Assembly Processes
• Lead Free By Design/RoHS Compliant (Note 1)
• "Green" Device (Note 2)
Mechanical Data
• Case: SOT-363
• Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminal Connections: See Diagram
• Terminals: Finish - Matte Tin annealed over Alloy 42
Power Dissipation (Note 3)
Power Derating Factor above 125°C
Output Current
Thermal Characteristics @T
Characteristic Symbol Value Unit
Operating and Storage Temperature Range
Thermal Resistance, Junction to Ambient Air (Equivalent to
One Heated Junction of PNP Transistor) (Note 3)
Notes: 1. No purposefully added lead.
DS30658 Rev. 7 - 2
2. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
3. Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on Diodes Inc. suggested pad layout document AP02001,
which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
Characteristic Symbol Min Typ Max Unit Test Condition
OFF CHARACTERISTICS
Collector-Base Cut Off Current
Collector-Emitter Cut Off Current
Emitter-Base Cut Off Current
Collector-Base Breakdown Voltage
Collector-Emitter Breakdown Voltage
Input Off Voltage
Output Voltage
Ouput Current (leakage current same as I
) I
CEO
I
CBO
I
CEO
I
EBO
V
(BR)CBO
V
(BR)CEO
V
I(OFF)
V
O(OFF)
OH
ON CHARACTERISTICS
Collector-Emitter Saturation Voltage
Equivalent On-Resistance*
DC Current Gain
Input On Voltage
Output Voltage (equivalent to V
CE(SAT) or VO(ON)
Input Current
Base-Emitter Turn-on Voltage
Base-Emitter Saturation Voltage
V
CE(SAT)
R
CE(SAT)
h
FE
V
I(ON)
) VOL
I
V
BE(ON)
V
BE(SAT)
Input Resistor (Base), +/- 30% R2
Pull-up Resistor (Base to Vcc supply), +/- 30% R1
Resistor Ratio (Input Resistor/Pull-up
resistor) +/- 20%
R1/R2
SMALL SIGNAL CHARACTERISTICS
Transition Frequency (Gain Bandwidth Product)
PNP Transistor (DDTB142JU) and N-MOSFET
(DSNM6047) with gate pull-down resistor integrated
as one in LMN200B02 can be used as a discrete
entity for general purpose applications or as an
integrated circuit to function as a Load Switch. When
it is used as the latter as shown in Fig 19, various
input voltage sources can be used as long as it does
not exceed the maximum ratings of the device.
These devices are designed to deliver continuous
output load current up to a maximum of 200 mA. The
MOSFET Switch draws no current, hence loading of
control circuit is prevented. Care must be taken for
higher levels of dissipation while designing for higher
load conditions. These devices provide high power
and also consume less space. The product mainly
helps in optimizing power usage, thereby conserving
battery life in a controlled load system like portable
battery powered applications. (Please see Fig. 20
for one example of a typical application circuit used
in conjunction with voltage regulator as a part of a
power management system)
U1
Vin
Control Logic
Circuit ( PI C,
Comparator
etc)
GND
Vin
10K
Control
Typical Application Circuit
5v Supply
Load Swi tch
U3
Vin
1
OUT1
Control
E_Q1
2
G_Q2
3
D_Q2
C_Q1
B_Q1
S_Q2
LNM200B02
Diodes Inc.
Fig. 20
DDTB142JU
E
Q1PNP
R1
B
R2470
D
DSNM6047
Q2NMOS
Fig. 19 Circuit Diagram
Vout
6
5
4
Gnd
INOUT
Voltage Regulator
R3
Vout
Point of
Load
LOAD
C
S
G
37K
U2
Ordering Information (Note 5)
Device
LMN200B02-7 SOT-363 3000/Tape & Reel
Notes: 5. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Packaging Shipping
Marking Information
PM2
PM2 = Product Type Marking Code,
YM = Date Code Marking
Y = Year (ex: T = 2006)
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