LTC3613 Datasheet, PDF (3/36 Pages) Linear Technology – 24V, 15A Monolithic Step Down Regulator

LTC3613
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C. SV_IN = 15V, V_FB = V_OSNS+ – V_OSNS–, unless otherwise noted. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loop
V_IN
Input Voltage Operating Range
V_OUT
Output Voltage Operating Range
I_Q
Input DC Supply Current
Normal
Shutdown Supply Current
MODE/PLLIN = INTV_CC
RUN = 0V
l 4.5
l 0.6
24
V
5.5
V
2
4
mA
15
25
μA
V_REG
Regulated Differential Feedback Voltage
I_TH = 1.2V (Note 3)
(V_OSNS+ – V_OSNS–)
T_A = 25°C
T_A = 0°C to 85°C
T_A = –40°C to 125°C
0.5985 0.6 0.6015
V
l 0.596 0.6 0.604
V
l 0.594 0.6 0.606
V
Regulated Differential Feedback
Voltage Over Line, Load and Common Mode
VV_IONSN=_S4_–.5=V±t5o002m4VV,
ITH = 0.5V
(Note 3)
to
1.9V,
(V_OSNS+ – V_OSNS–)
T_A = 0°C to 85°C
l 0.594 0.6 0.606
V
T_A = –40°C to 125°C
l 0.591 0.6 0.609
V
t_ON(MIN)
Minimum On-Time
65
ns
t_OFF(MIN)
Minimum Off-Time
105
ns
g_m(EA)
Error Amplifier Transconductance
I_TH = 1.2V (Note 3)
l 1.4
1.7
2
mS
V_SENSE(MAX)
V_SENSE(MIN)
V_SENSE(CM)
Valley Current Sense Threshold,
V_SENSE+ – V_SENSE–,
Peak Current = Valley + Ripple
V_RNG = 2V, V_FB = 0.57V
V_RNG = 0V, V_FB = 0.57V
V_RNG = INTV_CC, V_FB = 0.57V
Minimum Current Sense Threshold,V_SENSE+ – V_RNG = 2V, V_FB = 0.63V
V_SENSE–, Force Continuous Operation
V_RNG = 0V, V_FB = 0.63V
V_RNG = INTV_CC, V_FB = 0.63V
SENSE⁺, SENSE^– Voltage Range (Common
Mode)
l 80
100
120
mV
l 22
30
38
mV
l 39
50
61
mV
–50
mV
–15
mV
–25
mV
l –0.5
5.5
V
I_SENSE
SENSE⁺, SENSE^– Input Bias Current
V_SENSE(CM) = 0.6V
V_SENSE(CM) = 5V
±5
±50
nA
1
4
μA
V_RUN(TH)
RUN Pin On Threshold
V_RUN Rising
l 1.1
1.2
1.3
V
V_RUN(HYS)
RUN Pin Hysteresis
80
mV
I_SS
Soft-Start Charging Current
V_TRACKSS = 0V
1.0
μA
UVLO
I_VOSNS+
I_VOSNS–
INTV_CC Undervoltage Lockout
INTV_CC Undervoltage Lockout Release
V_OSNS+ Input Bias Current
V_OSNS– Input Bias Current
Falling
Rising
V_FB = 0.6V
V_FB = 0.6V
l 3.4
3.65
4.0
V
l
4.2
4.5
V
±5
±25
nA
–15
–50
μA
3613fa
3