Rainbow Electronics MAX5097 - Manual (Page 3)

MAX5096/MAX5097
40V, 600mA Buck Converters with Low-
Quiescent-Current Linear Regulator Mode
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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
BUCK MODE
Supply Current
(Buck Converter On)
I S
LDO/BUCK = low,
V
ADJ = 1.4V, MAX5096,
no switching
135kHz
version
693 980 µA
Supply Current
(Buck Converter On)
I S
LDO/BUCK = low,
V
ADJ = 1.4V, MAX5097,
no switching
330kHz
Version
720 1000 µA
5V version, 5.5V ≤ V
IN
≤ 40V, no load 4.85 5 5.12
Fixed Output Voltage V OUT
3.3V version, 5.5V ≤ V
IN
≤ 40V, no load 3.196 3.3 3.391
V
ADJ Set Point V FB 50% duty cycle, no load 1.189 1.237 1.280 V
ADJ Input Bias Current I FB V ADJ = 1.5V 5 100 nA
V ADJTH_R ADJ rising 125
Dual Mode ADJ Threshold
V ADJTH_F ADJ falling 62
mV
Maximum Duty Cycle D MAX V ADJ = 0.5V 100 %
Error Amplifier Transconductance Gm
EA
V
COMP
= V
ADJ
, I
COMP
= ±10µA 55 136 210 µS
Adjustable Output Voltage Range V ADJ 1.237 11.000 V
Minimum Output Current I OUT V IN = 6.5V to 40V 600 mA
Switch Current Limit I SW_LIM V IN = 6V to 40V 1.15 1.5 1.90 A
Internal Switch On-Resistance R DS(ON) V IN = 14V, I DRAIN = 100mA 0.9 2.1 Ω
Switch Leakage Current I SW_L V IN = 40V, V ADJ = 1.5V 0.05 3 µA
V IN = 14V, V OUT = 5V, I OUT = 400mA 85
Efficiency η
V IN = 14V, V OUT = 3.3V, I OUT = 400mA 81
%
MAX5096 120 135 148 kHz
Switching Frequency f SW
MAX5097 300 330 350 kHz
MAX5096 120 500 kHz
Synchronization SYNC Input f SYNC
MAX5097 300 500 kHz
SYNC Input High Threshold V SYNCH V BP = 4V 2.0 V
SYNC Input Low Threshold V SYNCL V BP = 4V 0.8 V
SYNC Input Minimum High Pulse
Width
250 ns
SYNC Input Leakage V SYNC =11V 1 µA
LDO MODE
Guaranteed Output Current I OUT (Note 2) 100 mA