See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

NGG | 6

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

LM1771USD/NOPB


Low-Voltage Synchronous Buck Controller with Precision Enable and No External Compensation

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Qty.Price
1 - 9 $ 2.10
10 - 24 $ 1.88
25 - 99 $ 1.69
100 - 249 $ 1.54
250 - 499 $ 1.39
500 - 749 $ 1.13
750 - 999 $ 0.92
1000 - 9999 $ 0.75

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Texas Instruments LM1771USD/NOPB

The LM1771 device is an efficient synchronous buck switching controller with a precision enable requiring no external compensation. The constant ON-time control scheme provides a simple design free of compensation components, allowing minimal component count and board space. The precision enable pin allows flexibility in sequencing multiple rails and setting UVLO. The LM1771 also incorporates a unique input feedforward to maintain a constant frequency independent of the input voltage. The LM1771 is optimized for a low-voltage input range of 2.8 V to 5.5 V and can provide an adjustable output as low as 0.8 V. Driving an external high-side PFET and low-side NFET, it can provide efficiencies as high as 95%.

Three versions of the LM1771 are available depending on the switching frequency desired for the application. Nominal switching frequencies are in the range of 100 kHz to 1000 kHz.

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