Rainbow Electronics MAX5097 - Manual (Page 4)

MAX5096/MAX5097
40V, 600mA Buck Converters with Low-
Quiescent-Current Linear Regulator Mode
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +14V, I OUT = 1mA, C IN = 100µF, C OUT = 22µF, L = 22µH, C BP = 1µF, V EN = +2.4V (Figure 2), SGND = PGND = 0V, T A = T J =
-40°C to +125°C, unless otherwise noted. Typical values are at T A = T J = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
5V version, MAX5096B/MAX5097B,
5.5V
≤ V
IN
≤ 40V, I
OUT = 10mA
4.89 5 5.09 V
Output Voltage V OUT
3.3V version, MAX5096A/MAX5097A,
4V
≤ V
IN
≤ 40V, I
OUT = 10mA
3.219 3.3 3.378 V
ADJ Set Point V ADJ I OUT = 10mA 1.21 1.2375 1.26 V
ADJ Input Bias Current I FB V ADJ = 4V 0.5 100 nA
Adjustable Output Voltage Range V ADJ I OUT = 10mA 1.237 11.000 V
Dropout Voltage ∆V
DO
I
OUT
= 100mA,
V OUT = 0.98 x V OUT(NOMINAL) (5V version
only), MAX5096B/MAX5097B
0.37 V
Startup Response Time
Rising edge of EN to
V
OUT = 10% V OUT(NOMINAL) ,
R L = 500 Ω, V
ADJ = SGND,
LDO/BUCK = 4V, C SS = 2nF
300 µs
5V version,
+5.5V
≤ V
IN
≤ +40V, I
OUT = 100mA
0.125
Line Regulation
∆V
OUT /
∆V
IN 3.3V version,
+4V
≤ V
IN
≤ +40V, I
OUT = 100mA
0.093
mV/V
T J = +25°C 0.242 0.374 5V version,
I
OUT = 100µA to
100mA, V IN = +14V T J = -40°C to +125°C 0.242 1
T J = +25°C 0.164 0.237
Load Regulation
∆V
OUT /
∆I
OUT 3.3V version,
I
OUT = 100µA to
100mA, V IN = +14V T J = -40°C to +125°C 0.164 1
mV/mA
Power-Supply Rejection Ratio PSRR
I OUT = 10mA, f = 100Hz, 500mV P-P ,
V OUT = +5V, V IN = +14V
60 dB
Short-Circuit Current I SC V IN = 6V 150 330 500 mA
BUCK MODE (LDO MODE TRANSITION)
LDO/BUCK High Threshold 2.0 V
LDO/BUCK Low Threshold 0.8 V
LDO/BUCK Input Leakage LDO/BUCK = 11V 1 µA
Transition Timing from LDO Mode
to Buck Mode Falling edge of LDO/BUCK to buck
converter on
32
Clock
Periods
Transition Timing from Buck
Mode to LDO Mode Rising edge of LDO/BUCK to LDO
operation
100 µs
SOFT-START, ENABLE (EN) AND RESET
Soft-Start Charge Current I
SS
V
SS
= 0.1V 3 5 7 µA
Soft-Start Reference Voltage V SS-REF V OUT = V OUT(NOMINAL) - 20% 0.9 0.99 1.1 V
EN High-Voltage Threshold V ENH EN = high, regulator on 1.4 V