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Linear Technology Electronic Components Datasheet

RH3080MK Datasheet

Adjustable 0.9A Single Resistor Low Dropout Regulator

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DICE/DWF SPECIFICATION
RH3080MK
Adjustable 0.9A Single
Resistor Low Dropout Regulator
PAD FUNCTION
DIE CROSS REFERENCE
1. IN
LTC Finished
Order
2. OUT
Part Number
Part Number
2
1
3. SENSE
4. SET
RH3080MK
RH3080MKDICE
5. VCONTROL
RH3080MK
RH3080MKDWF*
Please refer to LTC standard product data sheet for
other applicable product information.
*DWF = DICE in wafer form.
21
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
35
4
44mils × 75mils,
Backside metal: Alloyed gold layer
Backside potential: OUT
Tie SENSE to OUT
DESCRIPTION
The RH3080 is a 0.9A low dropout linear regulator with a
unique architecture featuring a precision current source
and voltage follower which allows the output to be pro-
grammed to any voltage between zero and 36V. Multiple
regulators can be paralleled to increase total output current
and spread heat over a system PC board with no need for
heat sinking. The pass transistor collector can be brought
out independently of the circuit supply voltage to allow
dropout voltage to approach the saturation limit of the
pass transistor. A small 2.2μF capacitor on the output with
an ESR of less than 0.5Ω is adequate to insure stability.
Applications with large output load transients require a
larger output capacitor value to minimize output voltage
change. Input circuitry insures output safe operating area
current limiting and thermal shutdown protection. The
rated output current of an RH3080-based part is fixed by
internal wire length/resistance. Linear Technology dice
element evaluations are based on parts rated for 0.9A
output current.
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1


Linear Technology Electronic Components Datasheet

RH3080MK Datasheet

Adjustable 0.9A Single Resistor Low Dropout Regulator

No Preview Available !

DICE/DWF SPECIFICATION
RH3080MK
www.DataSheet4U.com
DICE/DWF ELECTRICAL TEST LIMITS TA = 25°C. All voltages are relative to OUT.
PARAMETER
CONDITIONS
MIN
SET Pin Current (Note 6)
Output Offset Voltage (VOUT – VSET)
Load Regulation, ISET
Load Regulation, VOS
Line Regulation, ISET
Line Regulation, VOS
Minimum Load Current (Note 3)
VCONTROL Dropout Voltage (Note 4)
VIN Dropout Voltage (Note 4)
VCONTROL Pin Current (Note 5)
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
VIN = 1V, VCONTROL = 2V, ILOAD = 1mA
ILOAD = 1mA to 100mA
ILOAD = 1mA to 100mA
VIN = 1V to 26V, VCONTROL = 2V to 26V, ILOAD = 1mA
VIN = 1V to 26V, VCONTROL = 2V to 26V, ILOAD = 1mA
VIN = 10V, VCONTROL = 10V, VOUT = 0.1V
VIN = 26V, VCONTROL = 26V, VOUT = 0.1V
VIN = 1V, ILOAD = 0.1A
VCONTROL = 2V, ILOAD = 0.1A
VIN = 1V, VCONTROL = 2V, ILOAD = 0.1A
9.9
–5
–15
–1.0
–0.45
–0.05
MAX UNITS
10.1 μA
5 mV
15 nA
1.0 mV
0.45 nA/V
0.05 mV/V
0.4 mA
0.9 mA
1.4 V
0.17 V
5.3 mA
Note 1: Dice are probe tested at 25°C to the limits shown except for high
current tests. Dice are tested under low current conditions which assure
full load current specifications when assembled in packaging systems
approved by Linear Technology.
Note 2: Unless otherwise specified, all voltages are with respect to VOUT.
The RH3080MKDICE is tested at die sort under pulse load conditions such
that TA TJ.
Note 3: Minimum load current is equivalent to the quiescent current of
the part. Since all quiescent and drive current is delivered to the output
of the part, the minimum load current is the minimum current required to
maintain regulation.
Note 4: Dropout results from either of minimum control voltage,
VCONTROL, or minimum input voltage, VIN, both specified with respect
to VOUT. These specifications represent the minimum input-to-output
differential voltage required to maintain regulation.
Note 5: The VCONTROL pin current is the drive current required for the
output transistor. This current tracks output current with roughly a 1:60
ratio. The minimum value is equal to the quiescent current of the device.
Note 6: SET pin is clamped to the output with diodes. These diodes only
carry current under transient overloads.
Wafer level testing is performed per the indicated specifications for dice. Considerable differences in performance can often be observed for dice versus
packaged units due to the influences of packaging and assembly on certain devices and/or parameters. Please consult factory for more information
on dice performance and lot qualifications via lot sampling test procedures.
Dice data sheet subject to change. Please consult factory for current revision in production.
2 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
I.D.No. 66-13-3080 LT 0510 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2010


Part Number RH3080MK
Description Adjustable 0.9A Single Resistor Low Dropout Regulator
Maker Linear Technology
Total Page 2 Pages
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