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LTM4605
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C (Note 2), V IN = 12V. Per typical application (front page) con?guration.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Speci?cation s
I OUTDC
Output Continuous Current Range
(See Output Current Derating Curves
V IN = 12V, V OUT = 5V
V IN = 6V, V OUT = 12V
12
5
A
A
for Different V IN , V OUT and T A )
Δ V FB /V FB(NOM)
Reference Voltage Line Regulation
V IN = 4.5V to 20V, V COMP = 1.2V (Note 3)
0.002
0.02
%/V
Accuracy
Δ V FB /V FB(LOAD)
Load Regulation Accuracy
V COMP = 1.2V to 0.7V
V COMP = 1.2V to 1.8V (Note 3)
l
l
0.15
–0.15
0.5
–0.5
%
%
Switch Section
M1 t r
Turn-On Time (Note 4)
Drain to Source Voltage V DS = 12V,
50
ns
Bias Current I SW = 10mA
M1 t f
Turn-Off Time
Drain to Source Voltage V DS = 12V,
40
ns
Bias Current I SW = 10mA
M3 t r
Turn-On Time
Drain to Source Voltage V DS = 12V,
25
ns
Bias Current I SW = 10mA
M3 t f
Turn-Off Time
Drain to Source Voltage V DS = 12V,
20
ns
Bias Current I SW = 10mA
M2, M4 t r
Turn-On Time
Drain to Source Voltage V DS = 12V,
20
ns
Bias Current I SW = 10mA
M2, M4 t f
Turn-Off Time
Drain to Source Voltage V DS = 12V,
20
ns
Bias Current I SW = 10mA
t 1d
M1 Off to M2 On Delay (Note 4)
Drain to Source Voltage V DS = 12V,
50
ns
Bias Current I SW = 10mA
t 2d
M2 Off to M1 On Delay
Drain to Source Voltage V DS = 12V,
50
ns
Bias Current I SW = 10mA
t 3d
M3 Off to M4 On Delay
Drain to Source Voltage V DS = 12V,
50
ns
Bias Current I SW = 10mA
t 4d
M4 Off to M3 On Delay
Drain to Source Voltage V DS = 12V,
50
ns
Bias Current I SW = 10mA
Mode Transition 1
M2 Off to M4 On Delay
Drain to Source Voltage V DS = 12V,
220
ns
Bias Current I SW = 10mA
Mode Transition 2
M4 Off to M2 On Delay
Drain to Source Voltage V DS = 12V,
220
ns
Bias Current I SW = 10mA
M1 R DS(ON)
Static Drain-to-Source On-Resistance
Bias Current I SW = 3A
6.5
m Ω
M2 R DS(ON)
M3 R DS(ON)
M4 R DS(ON)
Static Drain-to-Source On-Resistance
Static Drain-to-Source On-Resistance
Static Drain-to-Source On-Resistance
Bias Current I SW = 3A
Bias Current I SW = 3A
Bias Current I SW = 3A
8
8
8
12
12
12
m Ω
m Ω
m Ω
Oscillator and Phase-Locked Loop
f NOM
f LOW
f HIGH
Nominal Frequency
Lowest Frequency
Highest Frequency
V PLLFLTR = 1.2V
V PLLFLTR = 0V
V PLLFLTR = 2.4V
260
170
340
300
200
400
330
220
440
kHz
kHz
kHz
R PLLIN
PLLIN Input Resistance
50
k Ω
I PLLFLTR
Phase Detector Output Current
f PLLIN < f OSC
f PLLIN > f OSC
–15
15
μA
μA
4605fc
3
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