MCP1700-3302 Reference Tables, Pins & Specifications

Pin reference

Signal names, electrical functions and connection guidance

TO-92

Physical pin numbers3 pins

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MCP1700-3302 pin functions and connections
Signal	Type	Function & connection
GND	Ground reference	Reference and low-current bias return. Connection guidance Join the input capacitor, output capacitor and load returns locally. Physical pin 1 in both selected packages.
VIN	Supply input	Input to the CMOS low-dropout pass stage. Connection guidance Use the example 5 V source with local 1 µF X7R bypass. TO-92 pin 2; SOT-23 pin 3. Recommended input is 2.3–6.0 V, subject to headroom.
VOUT	Regulated output	Fixed nominal 3.3 V output. Connection guidance Fit at least 1 µF effective output capacitance close to VOUT and GND. TO-92 pin 3; SOT-23 pin 2. Up to 250 mA, thermally limited.

Standard extended-temperature 3.3 V parts

Manufacturer-referenced values6 parameters

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Parameter	Value	Conditions / notes
Through-hole order	MCP1700-3302E/TO	TO-92, straight 1.27 mm pin pitch
SMD order	MCP1700T-3302E/TT	SOT-23; tape-and-reel order
TO-92 front-view pins	1 GND; 2 VIN; 3 VOUT	Flat face toward viewer, leads downward
SOT-23 pins	1 GND; 2 VOUT; 3 VIN	Package map rotated 90° for this page
3302 code	3.3 V output; standard 2% tolerance	E grade: −40 to 125°C
Other manufacturer packages	SOT-89 and DFN-6 also listed	Those land patterns are not included in this page

Illustrations identify the full order; actual SOT-23 3.3 V body marking uses CS plus traceability characters.

Use recommended values for the design

Manufacturer-referenced values7 parameters

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Parameter	Value	Conditions / notes
Operating input	2.3–6.0 V	Also satisfy VIN ≥ VOUT(max)+VDROPOUT
Absolute maximum input	6.5 V	Stress limit only
Nominal output	3.3 V	Fixed 3302 option
Output-current rating	250 mA	For voltage options ≥2.5 V; thermally limited
Operating junction	−40 to 125°C	Maximum stress junction 150°C
Storage temperature	−65 to 150°C	Unpowered storage rating
Thermal shutdown	140°C typical	Protection threshold; not an operating target

The regulator cannot step up a low input voltage.

VIN=nominal VOUT+1 V; 100 µA load; 1 µF X7R bypass unless noted

Manufacturer-referenced values7 parameters

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Parameter	Value	Conditions / notes
Output at 25°C	±2% maximum; ±0.4% typical	3.234–3.366 V for 3.3 V nominal
Output over temperature	±3% maximum	3.201–3.399 V over −40 to 125°C
Temperature coefficient	50 ppm/°C typical	Manufacturer characterization
Line regulation	±0.75%/V typical; ±1%/V limits	VIN from nominal VOUT+1 V to 6 V
Load regulation	±1% typical; ±1.5% limits	0.1–250 mA; constant-junction pulse measurement
Dropout at 250 mA	178 mV typical; 350 mV max.	Electrical-table voltage class >2.5 V; headline typical quoted at 2.8 V
Dropout definition	Output 2% below the value at 1 V headroom	Do not equate it to zero regulation error

At worst-case 3% output and 350 mV dropout, the simple input floor is 3.749 V before ripple margin.

Typical figures retain their test conditions

Manufacturer-referenced values5 parameters

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Parameter	Value	Conditions / notes
No-load quiescent current	1.6 µA typical; 4 µA maximum	VIN=nominal VOUT+1 V
Short-circuit current	408 mA typical	Peak measured 10 ms after short; no guaranteed minimum/maximum
Output rise time	500 µs typical	10–90%; VIN step 0–6 V; 50 Ω resistive load
Output-noise density	3 µV/√Hz typical	1 kHz; 100 mA; 1 µF output
PSRR reference test	44 dB typical at 100 Hz	1.2 V option; 50 mA; COUT1 µF; CIN0 µF; not a 3.3 V guarantee

Current limiting and thermal shutdown do not make sustained shorts a normal operating condition.

Simple ceramic bypass, close to the leads

Manufacturer-referenced values5 parameters

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Parameter	Value	Conditions / notes
Output capacitor	1 µF minimum effective capacitance	X7R/X5R recommended; account for DC bias
Input capacitor	1 µF in the example	Low source impedance needed for stability
Capacitor alternatives	Ceramic, tantalum or aluminum electrolytic	Check ESR, leakage and temperature behavior
Physical placement	OUT capacitor beside VOUT/GND	Keep load-return voltage drops small
Supply transient ceiling	Keep VIN within 6 V operating range	Include wiring-induced overshoot

A nominal 1 µF marking does not guarantee 1 µF after applied voltage and temperature.

Board-dependent temperature rise

Manufacturer-referenced values7 parameters

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Parameter	Value	Conditions / notes
SOT-23 θJA	212°C/W	JEDEC four-layer FR-4 board
SOT-23 θJC(bottom)	11.95°C/W	Thermal metric; not a substitute for PCB analysis
TO-92 thermal resistance	Determine for the actual assembly	Not given in this selected table
Nominal load	330 Ω →10 mA	3.3²/330=33 mW; use ≥0.25 W resistor
Pass-stage loss at 10 mA	(5−3.3)×0.010=17 mW	Total adds VIN×IQ
Pass-stage loss at 250 mA	425 mW	At 5 V input; ≈90°C rise using 212°C/W before bias term
Practical current ceiling	Depends on input voltage and ambient	Do not assume 250 mA is thermally available in every package

All example readings are calculated, not measured or time-domain simulated.