Datasheet

(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
Fixed Output Voltage V
OUT
5V version, 5.5V ≤ V
IN
≤ 40V, no load 4.85 5 5.12
V
3.3V version, 5.5V ≤ V
IN
≤ 40V, no load 3.196 3.3 3.391
ADJ Set Point V
FB
50% duty cycle, no load V
ADJ Input Bias Current I
FB
V
ADJ
= 1.5V 5 100 nA
Dual Mode ADJ Threshold
V
ADJTH_R
ADJ rising 125
mV
V
ADJTH_F
ADJ rising 62
Maximum Duty Cycle D
MAX
V
ADJ
= 0.5V 100 %
Error-Amplier Transconductance Gm
EA
V
COMP
= V
ADJ
, I
COMP
= ±10μA 55 136 210 µS
Adjustable Output Voltage Range V
ADJ
1.235 11.000
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
EN
= 0V 0.05 3 µA
Efciency η
V
IN
= 14V, V
OUT
= 5V, I
OUT
= 400mA 85
%
V
IN
= 14V, V
OUT
= 3.3V, I
OUT
= 400mA 81
Switching Frequency f
SW
MAX5096 120 135 148 kHz
MAX5097 300 330 350 kHz
Synchronization SYNC Input f
SYNC
MAX5096 120 500 kHz
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
MAX5096/MAX5097 40V, 600mA Buck Converters with Low-
Quiescent-Current Linear Regulator Mode
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Maxim Integrated │ 3
Electrical Characteristics (continued)