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| ISL70001SRH_11 Datasheet, PDF (7/16 Pages) Intersil Corporation – Radiation Hardened and SEE Hardened 6A Synchronous Buck Regulator | |||
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ISL70001SRH
Electrical Specifications Unless otherwise noted, VIN = AVDD = DVDD = PVINx = EN = M/S = 3V or 5.5V; GND = AGND = DGND =
PGNDx = TDI = TDO = ZAP = 0V; FB = 0.65V; PORSEL = VIN for 4.5V ⤠VIN ⤠5.5V and GND for VIN < 4.5V, SYNC = LXx = Open Circuit; PGOOD is
pulled up to VIN with a 1k resistor; REF is bypassed to GND with a 220nF capacitor; SS is bypassed to GND with a 100nF capacitor; IOUT = 0A;
TA = TJ = +25°C. (Note 3)
PARAMETER
TEST CONDITIONS
MIN
(Note 4) TYP
MAX
(Note 4)
UNITS
POWER SUPPLY
Operating Supply Current
Shutdown Supply Current
OUTPUT VOLTAGE
VIN = 5.5V
VIN = 3.6V
VIN = 5.5V, EN = GND
VIN = 3.6V, EN = GND
40
mA
25
mA
6
mA
3
mA
Reference Voltage Tolerance
0.6
V
Output Voltage Tolerance
Feedback (FB) Input Leakage Current
PWM CONTROL LOGIC
VOUT = 0.8V to 2.5V for VIN = 4.5V to 5.5V,
VOUT = 0.8V to 2.5V for VIN = 3V to 3.6V,
IOUT = 0A to 6A (Notes 5, 6)
VIN = 5.5V, VFB = 0.6V
0
%
0
µA
Oscillator Accuracy
1
MHz
External Oscillator Range
1
MHz
Minimum LXx On Time
Minimum LXx Off Time
Minimum LXx On Time
Minimum LXx Off Time
Master/Slave (M/S) Input Voltage
VIN = 5.5V, Test Mode
VIN = 5.5V, Test Mode
VIN = 3V, Test Mode
VIN = 3V, Test Mode
Input High Threshold
110
ns
40
ns
150
ns
50
ns
1.3
V
Input Low Threshold
1.2
V
Master/Slave (M/S) Input Leakage Current VIN = 5.5V, M/S = GND or VIN
Synchronization (SYNC) Input Voltage
Input High Threshold, M/S = GND
0
µA
1.7
V
Input Low Threshold, M/S = GND
1.5
V
Synchronization (SYNC) Input Leakage
VIN = 5.5V, M/S = GND, SYNC = GND or VIN
0
µA
Current
Synchronization (SYNC) Output Voltage
POWER BLOCKS
VIN - VOH @ IOH = -1mA
VOL@ IOL = 1mA
0.15
V
0.15
V
Upper Device rDS(ON)
VIN = 3V, 0.4A Per Power Block, Test Mode (Note 6)
215
mΩ
Lower Device rDS(ON)
VIN = 3V, 0.4A Per Power Block, Test Mode (Note 6)
146
mΩ
LXx Output Leakage
VIN = 5.5V, EN = LXx = GND, Single LXx Output
0
µA
VIN = 5.5V, EN = GND, LXx = VIN, Single LXx Output
0
µA
Deadtime
Within a Single Power Block or between Power
5
ns
Blocks (Note 6)
Efficiency
VIN = 3.3V, VOUT = 1.8V, IOUT = 3A
VIN = 5V, VOUT = 2.5V, IOUT = 3A
90
%
92
%
7
FN6947.1
May 23, 2011
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