MAX14912 Datasheet, PDF (4/30 Pages) Maxim Integrated Products – Low Power and Heat Dissipation

MAX14912/MAX14913
Octal High-Speed, High-Side
Switch/Push-Pull Driver
Electrical Characteristics (continued)
(V_DD = +10V to +36V, V₅ = +4.5V to +5.5V, V_L = +1.6V to +5.5V, T_A = -40°C to +125°C, unless otherwise noted. Typical values are at
T_A = +25°C and V_DD = +24V, CDCDC = 10µF, LDCDC = 100µH, CFLY = 200nF, CPUMP = 10µF, unless otherwise noted.)
PARAMETER
V₅/V_L Supplies
V₅ Supply Voltage
(Supplied Externally)
SYMBOL
V₅
CONDITIONS
MIN
TYP
MAX UNITS
4.5
5.5
V
V₅ Supply Current
(V₅ Supplied Externally)
HS mode, EN = high, OUT_
outputs high, no load, no LEDs
connected
I_V5
PP mode, EN = high, OUT_
switching at 100kHz, no load, no
LEDs connected
2.2
3.2
mA
8.5
11
mA
V₅ Undervoltage-Lockout
Threshold
V_{V5_UV}
V_DD = 24V, V5 rising
3.8
4.2
V
V₅ Undervoltage-Lockout
Hysteresis
V_L Supply Voltage
V_L Supply Current
V_L Undervoltage-Lockout
Threshold
5V DC-DC REGULATOR
V_{V5_UVHYST}
V_L
I_VL
V_{L_UV}
V_DD = 24V
All logic inputs high or low
V_L falling
0.3
V
1.6
5.5
V
24
35
µA
1.12
1.27
1.52
V
Undervoltage-Lockout
Threshold of the DC-DC
Regulator
Undervoltage-Lockout
Threshold of the DC-DC
Regulator Hysteresis
V_{DCDC_UVLO} V_DD rising
V_{DCDC_}
UVLOHY
6.6
V
0.5
Output Regulated Voltage
Current Limit
Turn-On Time
V_DCDC
0mA to 90mA external load current 4.85
5.0
5.15
V
I_{CL_DCDC}
100
mA
Delay from V_DD crossing the
T_{ON_DCDC} UVLO threshold until the DC-DC
3.0
3.4
3.7
ms
regulator finishes soft-start
Switching Frequency
DRIVER OUTPUTS (OUT_)
HS Mode On-Resistance
f_DCDC
R_{OUT_HS}
HS mode, HS = on, IOUT_ =
-500mA (Note 6)
540
600
660
kHz
110
230
mΩ
HS Mode Current Limit
HS Mode Current-Limit V/I
Slope
HS Mode Weak Pulldown
Current
I_LIM
EN = high, HS = on,
V_{OUT__} = V_DD -1V
0.64
0.87
1.2
A
(See Overcurrent and Short-Circuit
Protection section)
150
Ω
I_LKG
High-side mode, OL detect = off,
HS = off, 7V < V_{OUT_} < V_DD
65
100
135
µA
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