MAX8741EAI+T Maxim Integrated, MAX8741EAI+T Datasheet - Page 6

• Manufacturer Part Number: MAX8741EAI+T
• Description: Current & Power Monitors & Regulators 500kHz Multi-Out Pwr Supply Controller
• Manufacturer: Maxim Integrated

Specifications of MAX8741EAI+T

• Rohs: yes
• Product: Power Monitors
• Supply Voltage - Max: 30 V
• Supply Voltage - Min: 4.2 V
• Input Voltage Range: 4.2 V to 30 V

500kHz Multi-Output Power-Supply Controllers
with High Impedance in Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, both PWMs on, SYNC = V
Note 1: Each of the four digital soft-start levels is tested for functionality; the steps are typically in 20mV increments.
Note 2: High duty-factor operation supports low input-to-output differential voltages, and is achieved at a lowered operating frequency
Note 3: Off mode for the MAX8742 12V linear regulator occurs when the SMPS that has flyback feedback (V
Note 4: Since the reference uses V
Note 5: Production testing limitations due to package handling require relaxed maximum on-resistance specifications for the thin
Note 6: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
6
V+ Standby Supply Current
V+ Standby Supply Current in Dropout
V+ Shutdown Supply Current
Quiescent Power Consumption
FAULT DETECTION
Overvoltage Trip Threshold
Output Undervoltage Threshold
Output Undervoltage-Lockout Time
RESET
RESET Trip Threshold
RESET Delay Time
INPUTS AND OUTPUTS
Feedback-Input Leakage Current
Logic Input-Low Voltage
Logic Input-High Voltage
Logic Output-Low Voltage
Logic Output-High Current
TIME/ON5 Input Trip Level
TIME/ON5 Source Current
TIME/ON5 On-Resistance
Gate-Driver On-Resistance
_______________________________________________________________________________________
(see the Dropout Operation section).
In situations where the main outputs are being held up by external keep-alive supplies, turning off the 12OUT regulator prevents
a leakage path from the output-referred flyback winding, through the rectifier, and into V
QFN package. The SSOP and thin QFN packages contain the same die, and the thin QFN package imposes no additional
resistance in circuit.
PARAMETER
L
as its supply, the reference’s V+ line-regulation error is insignificant.
L
, V
L
load = 0, REF load = 0, SKIP = 0, T
V+ = 5.5V to 30V, both SMPSs off, includes
current into SHDN
V+ = 4.2V to 5.5V, both SMPSs off, includes
current into SHDN
V+ = 4.0V to 30V, SHDN = 0
Both SMPSs enabled,
FB3 = FB5 = 0,
CSL3 = CSH3 = 3.5V,
CSL5 = CSH5 = 5.3V
With respect to unloaded output voltage
With respect to unloaded output voltage
From each SMPS enabled, with respect to
f
With respect to unloaded output voltage,
falling edge; typical hysteresis = 1%
With respect to f
FB3, FB5; SECFB = 2.6V
RUN/ON3, SKIP, TIME/ON5 (SEQ = REF),
SHDN, STEER, SYNC
RUN/ON3, SKIP, TIME/ON5 (SEQ = REF),
SHDN, STEER, SYNC
RESET, I
RESET = 3.5V
SEQ = 0 or V
TIME/ON5 = 0, SEQ = 0 or V
TIME/ON5; RUN/ON3 = 0, SEQ = 0 or V
High or low (Note 5)
OSC
SINK
L
= 4mA
CONDITIONS
OSC
MAX8742
MAX8741
SSOP package
QFN package
A
L
= -40°C to +85°C, unless otherwise noted.) (Note 6)
L
DD
.
27,000
3300
MIN
2.4
2.4
2.5
60
-7
4
1
DD
TYP
) steered to it is disabled.
37,000
4700
MAX
200
0.6
0.4
2.6
3.5
60
10
10
80
50
80
-4
4
4
7
8
UNITS
Clks
Clks
mW
mA
µA
µA
µA
nA
µA
%
%
%
Ω
Ω
V
V
V
V