PE99155 Datasheet, PDF (2/15 Pages) Peregrine Semiconductor – Radiation Hardened UltraCMOS Monolithic Point-of-Load Synchronous Buck Regulator with Integrated Switches

PE99155
Product Specification
Table 2. Electrical Specifications
Case Temp (T_C) = -55 to +125°C, V_IN = 4.6 - 6.0V, V_OUT = 1.0 - 3.6V (except as noted)
Parameter
Conditions
Min
Typ
Max
Synchronous Frequency Range,
Fsw_range
0.1
5
Maximum Cycle-Averaged RMS
Output Current, Imax
10
Supply Current (Shutdown), IDDSB
Supply Current (No-load, 1 MHz
async), IDD0
SDb = GND, V_IN = 5.5V
SDb = GND, V_IN = 6.0V
3.5
10
6.26 15.65
35
80
High Side On Resistance, Ron, hss Test current = 100 mA
35
75
Low Side On Resistance, Ron, lss
Test current = 100 mA
40
80
Output Voltage
V_IN = 5.0V, I_OUT = Imax/2, -40≤ Tc ≤ +85°C, Fsw = 100 kHz - 1 MHz
-1
0
1
Reference Voltage Accuracy, Vref
V_IN = 5.0V, I_OUT = Imax/2, -55≤ Tc ≤ +125°C, Fsw = 100 kHz - 1 MHz
-1.5
0
1.5
V_IN = 5.0V, I_OUT = Imax/2, Fsw = 100 kHz - 1 MHz (100 Krad Post Rad,
Tc = 25°C)
-1.5
0
1.5
Reference Voltage Line Regulation,
Kvi (steady state)
+4.6V ≤ V_IN ≤ +6.0V, I_OUT = 5A, V_OUT = 2.5V, Fsw = 1 MHz
-0.2
0
0.2
Reference Voltage Load Regulation,
Kvo (steady state)
V_IN = 5.0V, 500 mA ≤ I_OUT ≤ 5A, V_OUT = 2.5V, Fsw = 1 MHz
-0.25
0
0.25
Internal Oscillator and SYNC Capture
Oscillator Frequency, FOSC
SYNC = GND
SYNC = Open or V_IN
340
500
660
0.75
1
1.31
Internal Oscillator Duty Cycle,
FOSC_DC
44
56
SYNC Lock Capture Frequency,
Sync_lock
40
External Sync Duty Cycle, SYNC_DC
40
60
Current Limiting and Current Mode Control Loop
Internal Current Limit Max, ILIMXINT
V_OUT = 1.0V, ISET = 3.0V, ICOMP = 0V, RSEL pin shorted to ground,
not min-on-time limited, Fsw = 500 kHz
10
12.13 14.56
Externally Set Max Current Limit
Accuracy, ILIMXEXT
V_OUT = 1.0V, RSET = 56Ω , ISET = 3.0V, ICOMP = 0V, RSEL=V_IN, not
min-on-time limited, Fsw = 500 kHz
10
12
14
Max voltage across Rset, VMAXRSET
1.35 1.55
1.75
I_out/I_rset, G_Iref
ICOMP cap, CICOMP
I_OUT set for 50% rated current
340
445
540
110
Current compensation gain, ICOMP
gain, G_ICOMP
7.5
10.5
13.2
Units
MHz
A
mA
mA
mA
mΩ
mΩ
%
%
%
%
%
kHz
MHz
%
kHz
%
A
A
V
A/A
pF
A/V
©2011-2012 Peregrine Semiconductor Corp. All rights reserved.
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Document No. 70-0307-07 │ UltraCMOS^® Power Management Solutions