LTC3675_15 Datasheet, PDF (6/38 Pages) Linear Technology – 7-Channel Configurable High Power PMIC

LTC3675/LTC3675-1
Electrical Characteristics The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP MAX
I_FB6
Feedback Leakage Current
DC6_buck(max) Maximum Buck Duty Cycle
V_FB6 = 0.85V
–50
50
Duty Cycle of PMOS Switch A
l 100
DC6_boost(max) Maximum Boost Duty Cycle
Duty Cycle of NMOS Switch C
75
R_PMOS6
PMOS On-Resistance
Switches A and D
260
R_NMOS6
NMOS On-Resistance
Switches B and C
275
I_LEAKP
PMOS Switch Leakage Current
–2
2
I_LEAKN
NMOS Switch Leakage Current
–2
2
t_SS
Soft-Start Time
500
R_OUTPD6
Output Pull-Down Resistance in Shutdown ENBB = 0
10
LED Driver; R_{LED_FS} = 20kΩ
I_VIN7
V_{LED_OV}
Input Current (MODE0 = MODE1 = 0)
LED Overvoltage Threshold
Feedback Voltage
LED_OV = 0.85V (Notes 4, 5)
Operating in LED Mode
Operating in Boost Mode
l 805
l 770
700 1000
825 845
800 830
V_{LED_FS}
V_LED1,2
LED Full-Scale Voltage
LED Pin Regulation Voltage
(Note 7)
l 775
800 825
300
V_{LED1,2_CLMP}
I_LIM7
I_{LED_FS}
I_{LED_2FS}
LED Regulation Voltage Clamp
Maximum Current Limit
LED Full-Scale Current
LED Full Current High Current Mode
(Note 6)
l 6.0
1.6
l 23.25
l 46.5
8.3
1.85 2.15
25.0 26.75
50
53.5
I_{LED_MATCH}
LED1 and LED2 Current Matching at
Full-Scale
|I_LED1 − I_LED2 | _{• 100}
l
1
 I_LED1 + I_LED2 

2

UNITS
nA
%
%
mΩ
mΩ
µA
µA
µs
kΩ
µA
mV
mV
mV
mV
V
A
mA
mA
%
I_{LED_LSB}
LED Current LSB
R_NMOS7
I_{LEAK_NMOS7}
NMOS On-Resistance
NMOS Switch Leakage
F_LEDOSC
Oscillator Frequency
DC_MAX7
Maximum Duty Cycle
25mA Always-On LDO
V_LDOFB
R_DO
I²C Port
Feedback Regulation Voltage
Dropout Resistance
DV_CC
I_DVCC
DV_{CC_UVLO}
ADDRESS
Input Supply Voltage
Input Supply Current
DV_CC UVLO
I²C Address
V_IH
V_IL
I_IH
I_IL
V_{OL_SDA}
f_SCL
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
SDA Output Low Voltage
Clock Operating Frequency
6
V_SW7 = 5.5V
NMOS Switch
SCL/SDA= 0kHz
LTC3675
LTC3675-1
SDA/SCL
SDA/SCL
SDA/SCL
SDA/SCL
I_SDA = 3mA
For more information www.linear.com/LTC3675
98
µA
300
mΩ
–1
1
µA
l 450 562.5 675
kHz
97
%
l 780
800 820
mV
12
Ω
l 1.6
5.5
V
0.3
1
µA
1
V
l
0001001[R/WB]
l
0110100[R/WB]
70
%DV_CC
30
%DV_CC
–1
0
1
µA
–1
0
1
µA
0.4
V
400
kHz
36751fc