ISL65426 Datasheet, PDF (8/22 Pages) Intersil Corporation – 6A Dual Synchronous Buck Regulator with Integrated MOSFETs

ISL65426
Electrical Specifications
PARAMETER
Recommended operating conditions unless otherwise noted. VCC = PVIN = 5.0V,
T_A = -10°C to +100°C. (Note 2) (Continued)
TEST CONDITIONS
MIN TYP
Peak Output Current Limit
Per Block
2.0
Upper Device r_DS(ON)
Lower Device r_DS(ON)
Efficiency
0.4A Per Block, VCC = PVIN = 3.3V, VOUT = 1.8V
0.4A Per Block, VCC = PVIN = 3.3V, VOUT = 1.8V
0.5A Per Block, VCC = PVIN = 3.3V, VOUT = 1.1V
60
100
30
55
90
0.5A Per Block, VCC = PVIN = 5V, VOUT = 2.5V
95
POWER-ON RESET AND ENABLE PINS
VCC POR Threshold
VCC Rising
2.15 2.25
VCC Falling
2.05 2.15
PVIN POR Threshold
PVIN Rising; Configuration 5:1
1.9 2.05
PVIN Falling; Configuration 5:1
1.75 1.90
PVIN Bias Output Voltage Enable Threshold VOUT2 = 3.3V; VCC = PVIN
4.1
4.3
VOUT2 = 2.5V; VCC = PVIN
2.8
2.9
EN1/EN2 Threshold
Rising Threshold; VCC = 5V
1.0
1.2
Hysteresis
280
Rising Threshold; VCC = 3.3V
0.75 0.98
Hysteresis
200
Rising Threshold; VCC = 2.375V
0.55 0.82
Hysteresis
185
EN1/EN2 Pull Up
7
10
EN Threshold
0.57 0.6
EN Sink Current
EN = GND
7
11
Soft-Start Time
4
POWER GOOD SIGNAL
Rising Threshold
Rising Hysteresis
Falling Threshold
Falling Hysteresis
Power Good Drive
As % of VREF; V_OUT1 = 1.8V; V_OUT2 = 3.3V
As % of VREF; V_OUT1 = 1.8V; V_OUT2 = 3.3V
As % of VREF; V_OUT1 = 1.8V; V_OUT2 = 3.3V
As % of VREF; V_OUT1 = 1.8V; V_OUT2 = 3.3V
VCC = 5V; PG1 = PG2 = 0.4V
110
115
5
7
80
85
4
7
1
Power Good Leakage
PROTECTION FEATURES
Undervoltage Monitor
Undervoltage Trip Threshold
As % of VREF
70
75
Undervoltage Recovery Threshold
As % of VREF
82
89
THERMAL MONITOR
Thermal Shutdown Temperature (Note 3)
150
NOTE:
3. Not production tested.
MAX
140
85
UNITS
A
mΩ
mΩ
%
%
2.35
V
2.25
V
2.15
V
2.00
V
4.5
V
3.0
V
1.45
V
mV
1.20
V
mV
1.05
V
mV
15
μA
0.63
V
15
μA
ms
120
%
9
%
90
%
9
%
mA
1
μA
80
%
95
%
°C
8
FN6340.1
November 14, 2006