MAX15062 Datasheet, PDF (3/23 Pages) Maxim Integrated Products – Step-Down DC-DC Converters

MAX15062
60V, 300mA, Ultra-Small, High-Efficiency,
Synchronous Step-Down DC-DC Converters
Electrical Characteristics (continued)
(V_IN = 24V, V_GND = 0V, C_IN = C_VCC = 1µF, V_EN/UVLO = 1.5V, LX = MODE = RESET = unconnected; T_A = T_J = -40°C to +125°C, unless
otherwise noted. Typical values are at T_A = +25°C. All voltages are referenced to GND, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
POWER MOSFETs
High-Side pMOS On-Resistance
Low-Side nMOS On-Resistance
LX Leakage Current
SOFT-START (SS)
R_DS-ONH
R_DS-ONL
I_LX-LKG
I_LX = 0.3A
(sourcing)
T_A = +25°C
T_A = T_J = +125°C
I_LX = 0.3A
(sinking)
T_A = +25°C
T_A = T_J = +125°C
V_EN/UVLO = 0V, V_IN = 60V, T_A = +25°C,
V_LX = (V_GND + 1V) to (V_IN - 1V)
Soft-Start Time
t_SS
FEEDBACK (FB)
FB Regulation Voltage
MODE = GND, MAX15062C
V_FB-REG
MODE = unconnected, MAX15062C
FB Leakage Current
OUTPUT VOLTAGE (V_OUT)
I_FB
MAX15062C
MODE = GND, MAX15062A
V_OUT Regulation Voltage
MODE = unconnected, MAX15062A
V_{OUT-REG MODE = GND, MAX15062B}
MODE = unconnected, MAX15062B
CURRENT LIMIT
Peak Current-Limit Threshold
I_PEAK-LIMIT
Runaway Current-Limit Threshold ^IRUNAWAY-
LIMIT
MODE = GND
Negative Current-Limit Threshold I_SINK-LIMIT
PFM Current Level
TIMING
Switching Frequency
Events to Hiccup After Crossing
Runaway Current Limit
FB/V_OUT Undervoltage Trip Level
to Cause Hiccup
Hiccup Timeout
Minimum On-Time
Maximum Duty Cycle
I_PFM
f_SW
t_ON-MIN
D_MAX
FB/V_OUT = 0.98 x FB/V_OUT-REG
MIN TYP MAX UNITS
1.35 1.75
Ω
2.7
0.45 0.55
Ω
0.9
-1
+1
µA
4.1
ms
0.887 0.9 0.913
V
0.887 0.915 0.936
-100 -25
nA
3.25 3.3 3.35
3.25 3.35 3.42
V
4.93
5
5.07
4.93 5.08 5.18
0.49 0.56 0.62
A
0.58 0.66 0.73
A
0.25 0.3 0.35
A
0.01
mA
0.13
A
465 500 535
kHz
1
Cycles
62.5 64.5 66.5
%
131
ms
90
130
ns
89
91.5
94
%
www.maximintegrated.com
Maxim Integrated│  3