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SC704CSTRT
Semtech Corporation
IC PWR SWITCH N-CHAN 1:1 4CSP
4083 Pcs New Original In Stock
Power Switch/Driver 1:1 N-Channel 500mA 4-CSP (0.76x0.76)
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*Quantity
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Minimum 1
5.0 / 5.0
- (423 Ratings)
SC704CSTRT
Product Overview
7216461
DiGi Electronics Part Number
SC704CSTRT-DGManufacturer
Semtech Corporation
SC704CSTRT
Description
IC PWR SWITCH N-CHAN 1:1 4CSPInventory
4083 Pcs New Original In Stock
Power Switch/Driver 1:1 N-Channel 500mA 4-CSP (0.76x0.76)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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SC704CSTRT Technical Specifications
Category
Power Management (PMIC), Power Distribution Switches, Load Drivers
Packaging
-
Series
-
Product Status
Obsolete
Switch Type
General Purpose
Number of Outputs
1
Ratio - Input:Output
1:1
Output Configuration
High Side
Output Type
N-Channel
Interface
On/Off
Voltage - Load
1.1V ~ 3.6V
Voltage - Supply (Vcc/Vdd)
Not Required
Current - Output (Max)
500mA
Rds On (Typ)
64mOhm
Input Type
-
Features
Slew Rate Controlled
Fault Protection
-
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Supplier Device Package
4-CSP (0.76x0.76)
Package / Case
4-WFBGA, CSPBGA
Base Product Number
SC704
Datasheet & Documents
HTML Datasheet
SC704CSTRT-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
SC704CSTRTCT
SC704CSTRTDKR
SC704CSTRTTR
Standard Package
5,000
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
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UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Je suis ravi de leur support après-vente qui est professionnel et toujours accessible.
December 02, 2025
DiGi Electronics always ensures our orders arrive promptly and intact.
December 02, 2025
Great prices that help me maintain my business expenses effectively.
December 02, 2025
Every visit is a positive experience thanks to their welcoming staff.
December 02, 2025
Their shipping process is incredibly reliable, with precise tracking that gives peace of mind at every stage.
December 02, 2025
I value their commitment to customer satisfaction after the sale.
December 02, 2025
They handle after-sales support with professionalism and care.
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Frequently Asked Questions (FAQ)
SC704CSTRT is obsolete—when I retrofit an existing 500 mA high-side load switch, what layout or BOM risks arise if I drop-in replace it with the SC725CSTRT in a 0.76 mm CSP footprint?
Both parts share the 4-CSP 0.76 mm outline, but the SC725CSTRT has 40 mΩ Rds(on) vs. 64 mΩ for SC704CSTRT; the lower resistance yields 3–4 °C less self-heating at 400 mA, yet inrush current rises ~35 %. To keep the original SC704CSTRT slew-rate behavior, add a 1 µF load capacitor instead of the typical 100 nF, and verify that your downstream DC-DC or LDO still starts within its UVLO window. Finally, confirm the pick-and-place machine has the same 0.3 mm nozzle clearance—SC725CSTRT die thickness is 50 µm taller, which can shadow adjacent 01005 passives if the stencil is unmodified.
My 1.8 V RTC domain is powered by a coin cell; can I place SC704CSTRT on the high side without a separate VDD pin and still meet 2 µA battery budget at –20 °C?
SC704CSTRT needs no VDD because it bootstraps from the input voltage, but its internal charge pump adds 25 nA typical at 25 °C. At –20 °C the leakage doubles to ~50 nA while Rds(on) climbs to 90 mΩ. For a 200 µA RTC load this only burns 18 µW, yet if your firmware allows the battery to slump to 1.2 V you must budget an extra 0.5 µA guard-band—otherwise the 32 kHz crystal may stall during switch turn-on. Place a 1 MΩ bleed resistor from IN to GND to keep the charge pump primed and avoid a 2 ms start-up delay that could reset the MCU.
I’m daisy-chaining three SC704CSTRT units to gate 1.35 V DDR5 rails on a DIMM—will the 64 mΩ typical stack-up violate the JEDEC 40 mV IR drop limit at 400 mA?
Three SC704CSTRT in series give 192 mΩ typical, 288 mΩ worst-case over temperature; at 400 mA that is 77 mV drop—nearly double the JEDEC budget. Instead of paralleling dies (thermal imbalance), replace the last switch in the chain with an SC725CSTRT (40 mΩ) to cut total drop to 42 mV. Route a Kelvin sense after the final switch and feed it to the PMIC feedback pin so the upstream regulator raises its output by 40 mV only when the rail is loaded, keeping standby margin when the DIMM is in power-down.
During reflow the SC704CSTRT 4-CSP shifted 60 µm sideways, creating 20 % X-ray voiding under the central ground pad—what field reliability risk remains for an 85 °C automotive application?
SC704CSTRT MSL-1 means moisture is not the culprit; the defect is pure placement drift. With 20 % voiding you lose 25 % of thermal conduction, so at 500 mA and 64 mΩ the 16 mW dissipation raises junction temperature by an extra 4 °C. In an 85 °C ambient this still keeps TJ below 105 °C, well under the silicon limit, but solder fatigue acceleration factor doubles. Apply a 3 °C derating to your 10-year FIT calculation and add 5 % margin to the current sense threshold so the system trips 25 mA earlier, preventing long-term resistance creep.
I want to replace a dual-channel 0.3 A P-channel load switch (TPS22902) with two SC704CSTRT N-channel devices to shrink BOM—how do I invert the logic and guarantee 1 ms soft-start for USB 5 V enumeration?
SC704CSTRT is high-side N-Fet with active-high Enable; to mimic TPS22902 active-low logic insert a 10 kΩ pull-up and drive a small-signal PNP (MMBT3906) inverter. The SC704CSTRT built-in slew-rate control is 1.5 ms typical at 3.3 V, but at 5 V it collapses to 0.6 ms. Add 100 pF from Enable to GND; this extends the turn-on ramp to 1.1 ms while keeping the 1.5 V logic threshold. Confirm cross-conduction: with two SC704CSTRT in parallel for 600 mA total, match the trace length within 2 mm to keep current imbalance under 5 % and avoid hot-spotting that the monolithic TPS22902 never had to handle.
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SC704CSTRT CAD Models
Semtech Corporation SC704CSTRT PCB symbols & footprints
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