LTC3600_15 Datasheet, PDF (3/28 Pages) Linear Technology – 15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator

LTC3600
Electrical Characteristics The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_IN = 12V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN
V_IN Supply Range
ISET
I_SET Reference Current
I_SET Line Regulation
I_SET DROP_OUT Voltage
I_SET Load Regulation
Error Amp Input Offset
I_SET > 45µA, V_IN – V_SET
I_OUT = 0 to 1.5A
(Note 4)
4
15
V
49.5
50
50.5
µA
l 49.3
50
51
µA
l
0.02 0.05
%/V
340
mV
0.25
µA
–3
3
mV
Error Amp Load Regulation
l
0.05
0.1
%
g_m(EA)
t_ON(MIN)
t_OFF(MIN)
I_LIM
Minimum V_OUT Voltage
Error Amplifier Transconductance
Minimum On-Time
Minimum Off-Time
Current Limit
Negative Current Limit
V_ISET = 0, R_OUT = 0
10
mV
0.63
0.9
mS
30
ns
130
ns
l 1.6
2
2.4
A
–0.9
A
R_TOP
R_BOTTOM
V_UVLO
V_RUN
Top Power NMOS On-Resistance
Bottom Power NMOS On-Resistance
INTV_CC Undervoltage Lockout Threshold
UVLO Hysteresis
Run Threshold
Run Hysteresis
RUN Pin Leakage
INTV_CC Rising
INTV_CC Falling
RUN Rising
RUN Falling
RUN = 12V
200
mΩ
100
mΩ
3.45
3.7
V
150
mV
l
1.55
1.8
V
0.13
V
0
2
µA
V_INTVCC
OV
UV
Internal V_CC Voltage
INTV_CC Load Regulation
Output Overvoltage PGOOD Upper
Threshold
Output Undervoltage PGOOD Lower
Threshold
PGOOD Hysteresis
5.5V < V_IN < 15V
I_LOAD = 0mA to 20mA
PGFB Rising
PGFB Falling
PGFB Returning
4.8
5
5.4
V
0.3
%
0.620 0.645 0.680
V
0.520 0.555 0.590
V
10
mV
PGOOD Pull-Down Resistance
1mA Load
200
Ω
PGOOD Leakage Current
PGOOD = 5V
1
µA
V_MODE/SYNC
MODE/SYNC Threshold
MODE/SYNC Pin Current
MODE V_IL(MAX)
MODE V_IH(MIN)
SYNC V_IH(MIN)
SYNC V_IL(MAX)
MODE = 5V
0.4
V
4.3
V
2.5
V
0.4
V
9.5
µA
f_OSC
V_INOV
I_Q
Switching Frequency
V_OUT Pin Resistance to Ground
V_IN Overvoltage Lockout
Input DC Supply Current
Discontinuous
Shutdown
R_T = 36.1k
V_IN Rising
V_IN Falling
(Note 3)
Mode = 0, R_T = 36.1k
Run = 0
l 0.92
1
1.06
MHz
600
kΩ
17.5
V
16
V
700 1100
µA
0
1.5
µA
3600fc
3