ADP5501 Analog Devices, ADP5501 Datasheet - Page 3

• Manufacturer Part Number: ADP5501
• Description: Programmable Current Backlight Driver with Ambient Light Sensor Input
• Manufacturer: Analog Devices

Specifications of ADP5501

• Vin Range: 2.7 to 5.5V
• Vout (v): 24 to 27
• Synchronous: No
• Package: 24-Lead LFCSP
• Led Configuration: Serial
• Topology: Inductive
• I2c Support: Yes
• Max Iout (ma): 30mA
• Brightness Control: I2C
• Switching Frequency: 1MHz
• Over Volt Protection (v): 24V

SPECIFICATIONS
VBAT = 2.7 V to 5.5 V, T
Table 1.
Parameter
SUPPLY VOLTAGE
SUPPLY CURRENT
BACKLIGHT LED DRIVER (SW, BST)
BACKLIGHT LED CURRENT SINK (BL_SNK)
AMBIENT LIGHT SENSOR (CMP_IN)
INPUT LOGIC LEVELS (SCL, SDA, RST)
INPUT LOGIC DEBOUNCE (RST)
OPEN-DRAIN OUTPUT LOGIC LEVELS (INT, SDA)
AUX LED CURRENT SINKs (ILED, C3, R3)
THERMAL SHUTDOWN
I
2
C TIMING SPECIFICATIONS
VBAT Input Voltage Range
VDDIO Input Voltage Range
Undervoltage Lockout Threshold
SW Leakage
Shutdown Current
Standby Current
Current Limit (Peak Inductor Current)
On Resistance
Overvoltage Threshold
Boost Startup Time
Full-Scale Current Sink
Backlight Current Ramp Rate
Full-Scale Current
Logic Low Input Voltage
Logic High Input Voltage
Input Leakage Current
Logic Low Output Voltage
Logic High Leakage Current
Leakage
Full-Scale Current Sink
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Delay from Reset Deassertion to I
SCL Clock Frequency
SCL High Time
SCL Low Time
Data Setup Time
Data Hold Time
Setup Time for Repeated Start
4
3
J
= −400C to +1250C, unless otherwise noted.
2
C Access
Symbol
V
V
UVLO
UVLO
UVLO
UVLO
SW
I
I
BL
V
V
V
V
V
V
LED
LED
TS
TS
f
t
t
t
t
t
SD
STNBY
SCL
HIGH
LOW
SU, DAT
HD, DAT
SU, STA
BAT
IO
IL
IH
I-LEAKAGE
IL-DBNC
OL
OH-LEAKAGE
HYS
FULLSCALE
LEAKAGE
LEAKAGE
FULLSCALE
VBAT
VBAT
VDDIO
VDDIO
Rev. 0 | Page 3 of 28
Conditions
VBAT falling
VBAT rising
VDDIO falling
VDDIO rising
2.7 V ≤ VBAT ≤ 5.5 V
VDDIO = 0 V
1.8 V ≤ VDDIO ≤ 3.3 V
STNBY = 0
Backlight code = 0x7F,
bias = 0.65 V
Fade timers disabled
1.8 V ≤ VDDIO ≤ 3.3 V
1.8 V ≤ VDDIO ≤ 3.3 V
1.8 V ≤ VDDIO ≤ 3.3 V
I
1.8 V ≤ VDDIO ≤ 3.3 V
Sink disabled
Applied pin voltage = 1 V
T
T
SINK
J
J
rising
falling
= 1mA
1
2
2
2
2
2
,
Min
2.7
1.8
1.7
1.1
450
200
24.5
26
0.7
0.7 × VDDIO
50
10.5
60
0.6
1.3
100
0
0.6
Typ
2.1
2.4
1.3
1.4
0.1
0.1
25
600
200
27
1
30
0.3
1
0.1
75
0.1
0.1
14
150
10
Max
5.5
3.3
2.7
1
1
45
750
400
29.5
32
1.2
0.3 × VDDIO
1
100
0.4
1
1
16.5
400
0.9
2
ADP5501
Unit
V
V
V
V
V
V
μA
μA
μA
mA
mΩ
V
mS
mA
mA/ms
mA
V
V
μA
μs
V
μA
μA
mA
°C
°C
μs
kHz
μs
μs
ns
μs
μs