ISL6124IRZA Intersil, ISL6124IRZA Datasheet - Page 9

• Manufacturer Part Number: ISL6124IRZA
• Description: IC POWER SUPPLY SEQUENCER 24QFN
• Manufacturer: Intersil

Specifications of ISL6124IRZA

• Applications: Power Supply Sequencer
• Voltage - Supply: 1.5 V ~ 5.5 V
• Current - Supply: 200µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -

charging to the 1.27V reference for various capacitor values
on the DLY_X pins. This table does not include the 10ms of
enable lock out delay during a start-up sequence but
represents the time from the end of the enable lock out delay
to the start of GATE transition. There is no enable lock out
delay for a sequence off, so this table illustrates the delay to
GATE transition from a disable signal.
l
DLY PIN CAPACITANCE
NOMINAL DELAY TO SEQUENCING THRESHOLD
1000pF
ENABLE (ISL6124)
ENABLE (ISL6123)
0.01µF
100pF
0.1µF
Open
1µF
DLYON_B
DLYON_D
DLYON_A
DLYON_C
ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128, ISL6130
UVLO_A
UVLO_B
UVLO_C
UVLO_D
GATE_B
GATE_D
GATE_C
GATE_A
RESET
FIGURE 3. ISL6123, ISL6124 TURN-ON AND GLITCH RESPONSE TIMING DIAGRAM
TABLE 1.
9
V
TIME(s)
0.00006
0.00013
UVLOVth
0.0013
V
0.013
V
0.13
UVLOVth
V
1.3
UVLOVth
UVLOVth
t
UVLOdel
V
EN
DLY_Vth
Figure 3 illustrates the turn-on and Figure 4 illustrates the
nominal turnoff timing diagram of the ISL6123 and ISL6124
product.
The ISL6125 is similar to the ISL6124 except that instead of
charge pumped GATE outputs, there are sequenced open
drain outputs that can be pulled up to a maximum of VDD.
Note the delay and flexible sequencing possibilities. Multiple
series, parallel or adjustable capacitors can be used to easily
fine tune timing between that offered by standard value
capacitors.
NOTE: Nom. T
DLY_Vth
DLY_Vth
DLY PIN CAPACITANCE
NOMINAL DELAY TO SEQUENCING THRESHOLD
DLY_Vth
10µF
DEL_SEQ
V
QPUMP
t
RSTdel
-1V
= Capacitor (µF)*1.3MΩ.
TABLE 1.
<t
FIL
V
V
V
V
QPUMP
QPUMP
QPUMP
QPUMP
TIME(s)
13
October 15, 2008
FN9005.10