Datasheet MAX25601A, MAX25601B, MAX25601C, MAX25601D (Maxim) - 5
| Manufacturer | Maxim |
| Description | Synchronous Boost and Synchronous Buck LED Controllers |
| Pages / Page | 33 / 5 — Electrical Characteristics (continued). PARAMETER. SYMBOL. CONDITIONS. … |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
Electrical Characteristics (continued). PARAMETER. SYMBOL. CONDITIONS. MIN. TYP. MAX. UNITS. BUCK / GATE DRIVERS
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Text Version of Document
MAX25601A/MAX25601B/ Synchronous Boost and MAX25601C/MAX25601D Synchronous Buck LED Controllers
Electrical Characteristics (continued)
(VIN = 12V, VUVEN = 12V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS BUCK / GATE DRIVERS
DH2 Gate Driver RDH2_SRC TA = -40°C to DH2 = high 2.5 5.0 On-Resistance +125°C, BST2- Ω RDH2_SINK LX2 forced to 5V DH2 = low 1.0 2.0 DH2 Gate Driver Source/ Sink Current IDH2 DH2-LX2 forced to 2.5V, BST2-LX2 forced to 5V. 1 A DL2 Gate Driver RDL2_SRC TA = -40°C to DL2 = high 2.5 5.0 On-Resistance +125°C Ω RDL2_SINK DL2 = low 1.0 3.0 DL2 Gate Driver Source/ Sink Current IDL2 1 A DL2 to DH2 Deadtime DL2 fall to DH2 rise, CL = 1nF 20 ns
BUCK / CURRENT MONITOR (IOUTV)
Current Sense Gain 5 Current Sense Offset 0.182 0.2 0.208 V IOUTV Source/Sink Current ±0.5 mA
BOOST / OSCILLATOR
Switching-Frequency Set by the RT resistor, 14kΩ < RRT < 171kΩ, Range FSW_RNG or by an external clock 200 2200 kHz R Switching Frequency F Spread-Spectrum RT = 85kΩ 370 400 430 SW_BOOST Disabled kHz RRT = 14kΩ 1980 2200 2365 Spread-Spectrum Spreading Factor ±6 % RT/SYNCIN Regulation Voltage 15kΩ < RRT < 171kΩ 1.25 V Soft-Start Time t Voltage mode soft-start; based on FSW_BOOST SS clocks 3712 clocks Triggers when current limit is reached and Hiccup Period thiccup boost output voltage < 70%; based on FSW_ 21504 clocks BOOST clocks Minimum Off-Time tOFF_MIN_BST 60 ns Minimum On-Time tON_MIN_BST 60 ns RT/SYNCIN Input Low VSYNCIN_IL 1 V RT/SYNCIN Input High VSYNCIN_IH 2.5 V SYNCOUT Clock Phase relation between internal oscillator clock and SYNCOUT clock 180 deg
BOOST / GATE DRIVERS
DH1 Gate Driver RDH1_SRC TA = -40°C to DH1 = high 1.6 3.2 On-Resistance +125°C, BST1- Ω RDH1_SINK LX1 forced to 5V DH1 = low 1.0 2.0 DH1 Gate Driver Source/ Sink Current IDH1 DH1-LX1 forced to 2.5V, BST1-LX1 forced to 5V 1 A www.maximintegrated.com Maxim Integrated │ 5
Electrical Characteristics (continued)
(VIN = 12V, VUVEN = 12V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS BUCK / GATE DRIVERS
DH2 Gate Driver RDH2_SRC TA = -40°C to DH2 = high 2.5 5.0 On-Resistance +125°C, BST2- Ω RDH2_SINK LX2 forced to 5V DH2 = low 1.0 2.0 DH2 Gate Driver Source/ Sink Current IDH2 DH2-LX2 forced to 2.5V, BST2-LX2 forced to 5V. 1 A DL2 Gate Driver RDL2_SRC TA = -40°C to DL2 = high 2.5 5.0 On-Resistance +125°C Ω RDL2_SINK DL2 = low 1.0 3.0 DL2 Gate Driver Source/ Sink Current IDL2 1 A DL2 to DH2 Deadtime DL2 fall to DH2 rise, CL = 1nF 20 ns
BUCK / CURRENT MONITOR (IOUTV)
Current Sense Gain 5 Current Sense Offset 0.182 0.2 0.208 V IOUTV Source/Sink Current ±0.5 mA
BOOST / OSCILLATOR
Switching-Frequency Set by the RT resistor, 14kΩ < RRT < 171kΩ, Range FSW_RNG or by an external clock 200 2200 kHz R Switching Frequency F Spread-Spectrum RT = 85kΩ 370 400 430 SW_BOOST Disabled kHz RRT = 14kΩ 1980 2200 2365 Spread-Spectrum Spreading Factor ±6 % RT/SYNCIN Regulation Voltage 15kΩ < RRT < 171kΩ 1.25 V Soft-Start Time t Voltage mode soft-start; based on FSW_BOOST SS clocks 3712 clocks Triggers when current limit is reached and Hiccup Period thiccup boost output voltage < 70%; based on FSW_ 21504 clocks BOOST clocks Minimum Off-Time tOFF_MIN_BST 60 ns Minimum On-Time tON_MIN_BST 60 ns RT/SYNCIN Input Low VSYNCIN_IL 1 V RT/SYNCIN Input High VSYNCIN_IH 2.5 V SYNCOUT Clock Phase relation between internal oscillator clock and SYNCOUT clock 180 deg
BOOST / GATE DRIVERS
DH1 Gate Driver RDH1_SRC TA = -40°C to DH1 = high 1.6 3.2 On-Resistance +125°C, BST1- Ω RDH1_SINK LX1 forced to 5V DH1 = low 1.0 2.0 DH1 Gate Driver Source/ Sink Current IDH1 DH1-LX1 forced to 2.5V, BST1-LX1 forced to 5V 1 A www.maximintegrated.com Maxim Integrated │ 5
