Datasheet MAX25610A, MAX25610B (Maxim) - 3

MAX25610A/MAX25610B Synchronous Buck and Buck-Boost LED Driver/DC-DC Converter
Electrical Characteristics
(INP = 12V, INN = AGND = PGND, PWMDIM = INN, Limits are 100% tested at TA = 25°C and TA = 125°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization from TA = -40°C to TA = 125°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY
t < 1s 40 External digital mode Buck-boost PWM dimming 5 36 Input Supply Voltage Range VINP configuration, V PWMDIM = V Internal analog mode EE PWM dimming 7.5 36 Buck configuration 8.3 36 PWMDIM = INN V Quiescent Current I INP = 12V 4 6 INQ mA PWMDIM = INN VINP = 36V 5 7 Rising threshold 7.5 8 8.3 Buck mode Falling threshold 7.25 7.75 8.25 UV Lockout V Rising threshold 4.2 4.45 5 Buck-boost mode Falling threshold 4.1 4.35 4.6 MAX25610A PWMDIM = VEE VINP = 12V 12 20 Switching Current ISW MAX25610B PWMDIM = VEE mA VINP = 12V 35 MAX25610A PWMDIM = VEE VINP = 33V 20
VCC REGULATOR
Output Voltage VCC 5.5V < VINP < 32V, IVCC = 0mA–20mA 4.89 5.00 5.1 V Dropout Voltage VCC_DROP VINP = 5V, IVCC = 20mA 0.2 0.35 V Short-Circuit Current Limit IVCC_SC VCC shorted to AGND 15 40 100 mA VCC Current Limit VCC = 4.8V 30 100 200 mA
VEE REGULATOR
Output Voltage VEE 5.5V < VINP < 33V, IVEE = 2mA 4.7 5.00 5.3 V Dropout Voltage VEE_DROP VINP = 5V, IVEE = 3mA 0.1 0.35 V VEE UVLO Rising VEE_UVLOR INP rising 4.1 4.4 4.6 V VEE UVLO Falling VEE_UVLOF INP Falling 4.0 4.25 4.5 V Short-Circuit Current Limit IVEE_SC VEE shorted to INN 10 26 60 mA
INTERNAL MOSFETS
High-Side MOSFET RDSON RON_HS ILX = 1A (0.5A per LX pin) (Note 1) 0.06 0.130 Ω Low-Side MOSFET RDSON RON_LS ILX = 1A (0.5A per LX pin) (Note 1) 0.06 0.130 Ω High-Side MOSFET Current Limit Threshold (Note 2) 3.55 4.25 4.84 A VINP = 40V, LX Leakage ILX,LEAK PWMDIM = INN VLX = 0V or 40V, -5.0 +5.0 μA TA = +25°C www.maximintegrated.com Maxim Integrated │ 3