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LM3488MM Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3488MM
Description  High-Efficiency, Low-Side, N-Channel Controller for Switching Regulators
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3488MM Datasheet(HTML) 3 Page - Texas Instruments

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LM3488, LM3488-Q1
www.ti.com
SNVS089N – JULY 2000 – REVISED DECEMBER 2014
5 Pin Configuration and Functions
8-Pin DGK
VSSOP Package
Top View
Pin Functions
PIN
TYPE
DESCRIPTION
NAME
NO.
ISEN
1
I
Current sense input pin. Voltage generated across an external sense resistor is fed into this pin.
COMP
2
A
Compensation pin. A resistor, capacitor combination connected to this pin provides compensation for the
control loop.
FB
3
I
Feedback pin. The output voltage should be adjusted using a resistor divider to provide 1.26 V at this pin.
AGND
4
P
Analog ground pin.
PGND
5
P
Power ground pin.
DR
6
O
Drive pin of the IC. The gate of the external MOSFET should be connected to this pin.
FA/SYNC/S
7
A
Frequency adjust, synchronization, and Shutdown pin. A resistor connected to this pin sets the oscillator
D
frequency. An external clock signal at this pin will synchronize the controller to the frequency of the clock.
A high level on this pin for
≥ 30 µs will turn the device off. The device will then draw less than 10µA from
the supply.
VIN
8
P
Power supply input pin.
6 Specifications
6.1 Absolute Maximum Ratings
(1)
MIN
MAX
UNIT
Input voltage
45
V
FB pin voltage
–0.4 < VFB
VFB < 7
V
FA/SYNC/SD pin voltage
–0.4 < VFA/SYNC/SD
VFA/SYNC/SD < 7
V
Peak driver output current (< 10 µs)
1
A
Power dissipation
Internally Limited
Junction temperature
150
°C
Lead temperature
Vapor Phase (60 s)
215
°C
Infared (15 s)
260
°C
DR pin voltage
−0.4 ≤ VDR
VDR
≤ 8
V
ILIM pin voltage
600
mV
(1)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Recommended Operating Conditions are
conditions under which operation of the device is intended to be functional. For specifications and test conditions, see the Electrical
Characteristics.
Copyright © 2000–2014, Texas Instruments Incorporated
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Product Folder Links: LM3488 LM3488-Q1


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