MAX15023ETG-T Datasheet, PDF (4/28 Pages) Maxim Integrated Products – Wide 4.5V to 28V Input, Dual-Output Synchronous Buck Controller

MAX15023
Wide 4.5V to 28V Input, Dual-Output
Synchronous Buck Controller
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 12V, R_T = 33kΩ, C_VCC = 4.7µF, C_IN = 1µF, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
(Note 3)
PARAMETER
CURRENT LIMIT/HICCUP
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Cycle-by-Cycle, Low-Side,
Source Peak Current-Limit
Threshold Adjustment Range
Source peak limit = V_{LIM_}/10
30
300
mV
LIM_ Reference Current
LIM_ Reference Current TC
Number of Consecutive Current-
Limit Events to Hiccup
I_{LIM_}
V_{LIM_} = 0.3V to 3V, T_A = +25°C
V_{LIM_} = 0.3V
45
50
55
2400
7
µA
ppm/°C
Events
Hiccup Timeout
Cycle-by-Cycle, Low-Side,
Sink Peak Current-Limit Sense
Voltage
BOOST
Boost Switch Resistance
POWER-GOOD OUTPUTS
PGOOD_ Threshold
PGOOD_ Output Leakage
PGOOD_ Output Low Voltage
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Out of soft-start
7936
V _{L IM _}/
20
Switching
cycles
V
V_IN = V_CC = 5.2V, I_{BST_} = 10mA
4.5
8
Ω
V_{FB_} rising
V_{FB_} falling
I_{LEAK_PGD} V_{PGOOD_} = 28V, V_{EN_} = 5V, V_{FB_} = 0.8V
V_{PGOOD_L} I_{PGOOD_} = 2mA, EN_ = SGND
88.5
85.5
92.5
89.5
96.5
93.5
1
0.4
%
V_FB(NOMINAL)
µA
V
Temperature falling
+150
°C
20
°C
Note 3: All Electrical Characteristics limits over temperature are 100% tested at room temperature and guaranteed by design over
the specified temperature range.
Note
4:
Select R_T
as
R_T (kΩ) =
24806
(f_SW (kHz))^1.0663
(24806 has a ¹ unit).
farad
4
Maxim Integrated