LTC3577-4_15 Datasheet, PDF (6/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

LTC3577-3/LTC3577-4
ELECTRICAL CHARACTERISTICS I²C Interface. The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T_A = 25°C. DV_CC = 3.3V, V_OUT = 3.8V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DV_CC
I_DVCC
Input Supply Voltage
DV_CC Supply Current
SCL = 400kHz
SCL = SDA = 0kHz
1.6
5.5
V
10
μA
1
μA
V_DVCC,UVLO
V_IH
V_IL
DV_CC UVLO
Input HIGH Voltage
Input LOW Voltage
1.0
V
50
70
%DV_CC
30
50
%DV_CC
I_IH
Input HIGH Leakage Current
SDA = SCL = DV_CC = 5.5V
I_IL
Input LOW Leakage Current
SDA = SCL = 0V, DV_CC = 5.5V
V_OL
SDA Output LOW Voltage
I_SDA = 3mA
Timing Characteristics (Note 8) (All Values are Referenced to V_IH and V_IL)
f_SCL
SCL Clock Frequency
t_LOW
LOW Period of the SCL Clock
t_HIGH
HIGH Period of the SCL Clock
t_BUF
Bus Free Time Between Stop and Start Condition
t_HD,STA
Hold Time After (Repeated) Start Condition
t_SU,STA
Setup Time for a Repeated Start Condition
t_SU,STO
Stop Condition Setup Time
–1
1
μA
–1
1
μA
0.4
V
400
kHz
1.3
μs
0.6
μs
1.3
μs
0.6
μs
0.6
μs
0.6
μs
t_HD,DATO
t_HD,DATI
t_SU,DAT
t_SP
Output Data Hold Time
Input Data Hold Time
Data Setup Time
Input Spike Suppression Pulse Width
0
900
ns
0
ns
100
ns
50
ns
LED Boost Switching Regulator. The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T_A = 25°C. V_IN3 = V_OUT = 3.8V, R_OV = 10M, R_{LED_FS} = 20k, boost regulator disabled unless
otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
V_IN3, V_OUT
I_{VOUT_LED}
Operating Supply Range
Operating Quiescent Current
Shutdown Quiescent Current
(Note 9)
(Notes 10, 14)
l 2.7
5.5
560
0.01
V_{LED_OV}
I_LIM
I_LED(FS)
I_LED(DIM)
R_NSWON
I_NSWOFF
f_OSC
V_{LED_FS}
I_{LED_OV}
D_BOOST
V_BOOSTFB
LED Overvoltage Threshold
Peak NMOS Switch Current
I_LED Pin Full-Scale Operating Current
I_LED Pin Full-Scale Dimming Range
R_DS(ON) of NMOS Switch
NMOS Switch Off Leakage Current
Oscillator Frequency
LED_FS Pin Voltage
LED_OV Pin Current
Maximum Duty Cycle
Boost Mode Feedback Voltage
LED_OV Rising
LED_OV Falling
64 Steps
V_SW = 5.5V
I_LED = 0
1.0
1.25
0.6
0.85
800
1000
1200
18
20
22
60
240
0.01
1
0.95
1.125
1.3
l 780
800
820
l 3.8
4
4.2
97
l 775
800
825
UNITS
V
μA
μA
V
V
mA
mA
dB
mΩ
μA
MHz
mV
μA
%
mV
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