SC600BIMLTRT LED Driver IC Equivalent & Substitute Parts

Part Overview

The SC600BIMLTRT is a switched capacitor (charge pump) LED driver IC manufactured by Semtech Corporation, designed for backlight applications with 120mA output current capability. This part operates from a 2.5V to 6.5V supply and delivers a regulated 5V output at 650kHz switching frequency in a compact 10-MLPD (3x3) surface mount package.

The SC600BIMLTRT is classified as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for legacy systems or new designs requiring equivalent functionality.

Key Parameters

Parameter	SC600BIMLTRT
Manufacturer	Semtech Corporation
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Switched Capacitor (Charge Pump)
Number of Outputs	1
Voltage - Supply (Min)	2.5V
Voltage - Supply (Max)	6.5V
Voltage - Output	5V
Current - Output / Channel	120mA
Frequency	650kHz
Applications	Backlight
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	10-VFDFN Exposed Pad
Supplier Device Package	10-MLPD (3x3)
Product Status	Obsolete
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SC600BIMLTRT requires matching or exceeding the following critical parameters:

Primary Substitution Criteria:

Topology: Switched Capacitor (Charge Pump) topology is preferred to maintain equivalent circuit behavior and minimize external component changes
Supply Voltage Range: Minimum 2.5V input capability; maximum 6.5V or higher
Output Current: Minimum 120mA capability
Output Voltage: 5V regulated output or adjustable to 5V
Package Compatibility: Surface mount packages with similar footprint and pin count (10-pin preferred)
Operating Temperature: Support for -40°C to 150°C range or equivalent industrial grade
Application Class: Backlight-rated devices

Secondary Considerations:

Switching Frequency: 650kHz nominal; alternatives within 400kHz to 1MHz acceptable
Dimming Capability: Analog or PWM dimming support
RoHS and MSL Compliance: Active product status with current certifications

The substitute parts listed below are grouped by topology alignment and functional equivalence. Parts with switched capacitor topology provide direct functional replacement. Parts with alternative topologies (buck, boost) are included where supply voltage and output current specifications permit system-level substitution with potential circuit modifications.

Parameter Comparison

Parameter	SC600BIMLTRT	MAX1910EUB+	LT3591EDDB#TRMPBF	LT3592EDDB#TRMPBF	A6211GLJTR-T	LM3405AXMK/NOPB	LM36011YKBR	MP2410GJE-P	MPQ4425MGQB-AEC1-P	RT8511AGQWA	MAX8607ETD+T
Manufacturer	Semtech	Analog Devices/Maxim	Analog Devices	Analog Devices	Allegro	Texas Instruments	Texas Instruments	Monolithic Power	Monolithic Power	Richtek	Analog Devices/Maxim
Type	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	Linear	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator
Topology	Switched Capacitor (Charge Pump)	Switched Capacitor (Charge Pump)	Step-Up (Boost)	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck)	Constant Current	Step-Down (Buck)	Step-Down (Buck)	Step-Up (Boost)	Step-Up (Boost)
Voltage - Supply (Min)	2.5V	2.7V	2.5V	3.6V	6V	3V	2.5V	4.2V	4V	2.7V	2.7V
Voltage - Supply (Max)	6.5V	5.3V	12V	36V	48V	22V	5.5V	24V	36V	24V	5.5V
Voltage - Output	5V	—	—	30V	—	—	—	—	—	43V	—
Current - Output / Channel	120mA	120mA	500mA (Switch)	50mA, 500mA	3A	1A	1.5A	2A	1.5A	1.2A (Switch)	1.5A (Flash)
Frequency	650kHz	750kHz	1MHz	400kHz ~ 2.2MHz	—	1.6MHz	—	1MHz	2.2MHz	1MHz	1MHz
Dimming	—	—	PWM	—	PWM	PWM	Analog, PWM	Analog	PWM	PWM	—
Applications	Backlight	Backlight	Backlight	Lighting	Lighting	Lighting	Mobile Communications	Backlight	Lighting	Backlight	Camera Flash
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TJ)	-40°C ~ 125°C (TA)	-40°C ~ 105°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	10-VFDFN Exposed Pad	10-TFSOP, 10-MSOP	8-WFDFN Exposed Pad	10-WFDFN Exposed Pad	8-SOIC Exposed Pad	SOT-23-6	8-XFBGA, DSBGA	SOT-23-8	13-PowerVQFN	8-WDFN Exposed Pad	14-WFDFN Exposed Pad
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

Direct Topology Match (Preferred):

MAX1910EUB+ is the closest functional equivalent. It employs switched capacitor (charge pump) topology identical to the SC600BIMLTRT, operates within overlapping supply voltage range (2.7V to 5.3V), and delivers 120mA output current. The MAX1910EUB+ is active product status with ROHS3 compliance and MSL 1 rating. Package footprint differs (10-TFSOP/MSOP versus 10-MLPD), requiring PCB layout modification. Operating temperature range is reduced to -40°C to 85°C, which may not satisfy applications requiring the full -40°C to 150°C range of the original part.

Alternative Topology Substitutes (Conditional):

LT3592EDDB#TRMPBF (Step-Down Buck) provides 500mA output current with 10-DFN package similar in size to the original. Supply voltage range extends to 36V maximum, supporting broader input conditions. Output voltage is adjustable to 30V, requiring circuit design modification for 5V output. Frequency range 400kHz to 2.2MHz encompasses the original 650kHz specification. Active product status with ROHS3 compliance and MSL 1 rating.

LT3591EDDB#TRMPBF (Step-Up Boost) operates from 2.5V minimum supply, matching the original specification. Output current capability is 500mA (switch), exceeding the 120mA requirement. Step-up topology requires different external inductor and capacitor selection compared to charge pump architecture. Backlight application classification aligns with original use case. Active product status with ROHS3 compliance and MSL 1 rating.

MP2410GJE-P (Step-Down Buck) delivers 2A output current with analog dimming support. Supply voltage minimum is 4.2V, exceeding the original 2.5V minimum. Backlight application classification matches original intent. TSOT-23-8 package is significantly smaller than 10-MLPD, requiring substantial PCB redesign. Active product status with ROHS3 compliance and MSL 1 rating.

LM3405AXMK/NOPB (Step-Down Buck) provides 1A output current with PWM dimming. Supply voltage range 3V to 22V supports the original 2.5V to 6.5V window. TSOT-23-6 package is compact, requiring PCB layout modification. Lighting application classification is compatible with backlight use. Active product status with ROHS3 compliance and MSL 1 rating.

Temperature-Constrained Applications:

LM36011YKBR (Linear Constant Current) operates from 2.5V to 5.5V supply, matching the original voltage window. Output current is 1.5A, exceeding 120mA requirement. Linear topology differs fundamentally from switched capacitor architecture, requiring circuit redesign. Operating temperature range -40°C to 85°C is reduced. Mobile communications application classification differs from backlight. Active product status with ROHS3 compliance and MSL 1 rating.

Automotive-Grade Alternative:

MPQ4425MGQB-AEC1-P (Step-Down Buck) is AEC-Q100 qualified for automotive applications. Supply voltage range 4V to 36V, output current 1.5A, PWM dimming support. Operating temperature -40°C to 125°C supports extended industrial range. 13-QFN package differs from original 10-MLPD. Active product status with ROHS3 compliance and MSL 1 rating.

Boost Topology Options:

RT8511AGQWA (Step-Up Boost) operates from 2.7V to 24V supply with 1.2A switch current. Output voltage reaches 43V, supporting high-voltage backlight applications. PWM dimming capability included. 8-WDFN package is smaller than original. Operating temperature -40°C to 85°C is reduced. Active product status with ROHS3 compliance and MSL 3 rating.

MAX8607ETD+T (Step-Up Boost) delivers 1.5A flash current from 2.7V to 5.5V supply. Camera flash application classification differs from backlight. 14-TDFN package is larger than original. Operating temperature -40°C to 85°C is reduced. Active product status with ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can MAX1910EUB+ directly replace SC600BIMLTRT without circuit modification?

A: MAX1910EUB+ shares identical switched capacitor topology and 120mA output current specification. Supply voltage range (2.7V to 5.3V) overlaps the original (2.5V to 6.5V), though the maximum is slightly lower. Package footprint differs (10-TFSOP/MSOP versus 10-MLPD), requiring PCB layout changes. External component values may require adjustment based on datasheet recommendations. Operating temperature maximum is reduced from 150°C to 85°C.

Q: What is the primary difference between charge pump and buck converter topologies?

A: Switched capacitor (charge pump) topology uses capacitors as energy transfer elements and operates at fixed frequency without inductors, resulting in compact size and lower EMI. Buck (step-down) converters use inductors for energy storage and provide higher efficiency at higher output currents. Buck converters require larger external components and PCB area. For low-current backlight applications (120mA), charge pump efficiency is comparable to buck converters.

Q: Which substitute part best matches the -40°C to 150°C operating temperature range?

A: None of the listed substitute parts fully match the -40°C to 150°C temperature range of the SC600BIMLTRT. LT3592EDDB#TRMPBF and MP2410GJE-P support -40°C to 125°C, the highest among alternatives. Applications requiring the full 150°C maximum junction temperature may require custom thermal management or alternative component selection outside this list.

Q: Can boost converter substitutes (LT3591, RT8511, MAX8607) replace the SC600BIMLTRT?

A: Boost converters step up voltage from input to output, fundamentally different from the charge pump's fixed voltage conversion. Boost topology is suitable only if the application requires output voltage higher than input voltage. For 5V output from 2.5V to 6.5V input, boost converters are not appropriate. Boost alternatives are listed for reference in applications where output voltage exceeds input voltage.

Q: What package considerations apply when substituting the SC600BIMLTRT?

A: The original SC600BIMLTRT uses 10-MLPD (3x3) package. MAX1910EUB+ uses 10-TFSOP/MSOP with different pin pitch and footprint. LT3592EDDB#TRMPBF uses 10-DFN (3x2) with similar size but different pin arrangement. Smaller packages (LM3405 TSOT-23-6, MP2410 TSOT-23-8) require significant PCB redesign. Larger packages (MPQ4425 13-QFN, MAX8607 14-TDFN) may not fit existing board space. Pin-to-pin compatibility must be verified against schematic and PCB layout.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original SC600BIMLTRT is RoHS Compliant (earlier standard). ROHS3 represents current regulatory compliance. MSL (Moisture Sensitivity Level) ratings vary: most substitutes are MSL 1 (unlimited shelf life), while A6211GLJTR-T and RT8511AGQWA are MSL 3 (168-hour limit), requiring controlled storage conditions.

Q: Which substitute offers the highest output current capability?

A: A6211GLJTR-T delivers 3A output current, the highest among listed substitutes. However, it uses step-down (buck) topology and requires 6V minimum supply voltage, exceeding the original 2.5V minimum. LT3592EDDB#TRMPBF and MP2410GJE-P provide 500mA and 2A respectively, both exceeding the original 120mA specification.

Q: Do substitute parts support dimming functionality?

A: Dimming support varies. MAX1910EUB+ and LT3592EDDB#TRMPBF do not include dimming. LT3591EDDB#TRMPBF, A6211GLJTR-T, LM3405AXMK/NOPB, LM36011YKBR, MP2410GJE-P, MPQ4425MGQB-AEC1-P, and RT8511AGQWA support PWM or analog dimming. Applications requiring brightness control must select parts with appropriate dimming capability.

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