Rainbow Electronics MAX16904 - Manual (Page 4)

MAX16904
2.1MHz, High-Voltage,
600mA Mini-Buck Converter
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V SUP = +14V, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SKIP-Mode Peak Current I SKIP 350 mA
High-Side DMOS RDS ON R ON,HS V BIAS = 5V 400 800 m
Low-Side DMOS RDS
ON
R
ON,LS
250 450 m
DMOS Peak Current-Limit
Threshold
I MAX 850 1500 1725 mA
Soft-Start Ramp Time t SS 7 8 9 ms
LX Rise Time t RISE,LX 5 ns
Minimum On-Time t ON 80 ns
PWM Switching Frequency f SW Internally generated 1.925 2.1 2.275 MHz
SYNC Input Frequency Range f SYNC 1.8 2.6 MHz
Spread-Spectrum Range SS Spread-spectrum option only +6 %
PGOOD
V
THR,PGD
V
OUT
rising 93
PGOOD Threshold
V THF,PGD V OUT falling 88 91 94
%
PGOOD Debounce t DEB 10 μs
PGOOD High Leakage Current I LEAK,PGD T A = +25°C 1 μA
PGOOD Output Low Level V OUT,PGD Sinking 1mA 0.4 V
LOGIC LEVELS
V IH,EN 2.4
EN Level
V IL,EN 0.6
V
EN Input Current I
IN,EN
V
EN
= V
SUP
= +42V, T
A
= +25°C 1 μA
V IH,SYNC 1.4
SYNC Switching Threshold
V IL,SYNC 0.4
V
SYNC Internal Pulldown R PD,SYNC 200 k
THERMAL PROTECTION
Thermal Shutdown T SHDN 175 °C
Thermal Shutdown Hysteresis T SHDN,HYS 15 °C
Note 2: When the typical minimum on-time of 80ns is violated, the device skips pulses.
Note 3: Not production tested. Guaranteed by design.