PRODUCT DATASHEET
AAT3103
ChargePump
TM
Electrical Characteristics
1
IN = EN = 3.6V; C
IN
= 1μF; C
OUT
= 1μF; C
CP
= 1μF; R
SET
= 14.3kΩ; T
A
=-40°C to 85°C unless otherwise noted. Typical
values are at T
A
= 25°C.
Symbol
Description
Conditions
Min
2.7
IN = 5.5V; EN = IN; V
D1
= V
D2
= V
D3
= 0V
IN = 5.5V; EN = IN; I
D1
= I
D2
= I
D3
= FS,
excluding I
D1
-I
D3
; V
D1
= V
D2
= V
D3
= IN – 1.5V
Operating, I
D1
= I
D2
= I
D3
= OPEN
EN/SET or EN/PWM = GND
7.4
1.9
4
3-Channel Charge-Pump LED Driver
Typ
Max
5.5
10
3
6.8
1
Units
V
mA
μA
mA
MHz
mV
μs
mA
%
mA
mA
mA
mV
Input Power Supply
IN
Input Voltage Range
I
IN
Input Operating Current
I
IN(SHDN)
Input Shutdown Current
Charge Pump Section
OUT Maximum Output Current
I
OUT
f
OSC
Charge Pump Oscillator Frequency
V
IN_(TH)
Charge Pump Mode Hysteresis
I
D1
= I
D2
= I
D3
= 20mA
t
OUT
LED Output Current Start-up Time
EN/SET or EN/PWM = IN
AAT3103-1/-2/-4: LED Current Source Outputs
I
D_(MAX)
D1 - D3 Current Accuracy
DATA = 1; V
IN
– V
F
= 1.5V.
ΔI
D_(MAX)
D1 - D3 Current Matching
DATA = 1; V
IN
– V
F
= 1.5V
D1 - D3 Current Accuracy
I
D_(DATA15)
DATA = 15; V
IN
– V
F
= 1.5V
(AAT3103-1 only)
D1 - D3 Current Accuracy
I
D_(DATA8)
DATA = 8; V
IN
– V
F
= 1.5V
(AAT3103-2 only)
D1 - D3 Current Accuracy
DC = 10%; V
IN
– V
F
= 1.5V
I
D_(10%)
(AAT3103-4 only)
D1- D3 Charge Pump Mode
V
D_(TH)
I
D1
= I
D2
= I
D3
= 20mA
Transition Threshold
V
SET
R
SET
Pin Voltage
AAT3103-1/-2: EN/SET and S
2
Cwire Control
V
ENH
EN/SET Input High Threshold Voltage
V
ENL
EN/SET Input Low Threshold Voltage
I
EN(LKG)
EN/SET Input Leakage Current
EN/SET = IN = 5V
t
EN/SET(OFF)
EN/SET Input OFF Timeout
t
EN/SET(LAT)
EN/SET Input Latch Timeout
t
EN/SET(LOW)
EN/SET Input Low Time
t
ENSET(H-MIN)
EN/SET Minimum High Time
t
ENSET(H-MAX)
EN/SET Maximum High Time
AAT3103-4: EN/PWM Current Control
V
ENH
EN/PWM Input High Threshold Voltage
V
ENL
EN/PWM Input Low Threshold Voltage
I
EN(LKG)
EN/PWM Input Leakage Current
EN/PWM = IN = 5V
PWM Control Turn-on Delay
t
PWM(ON)
t
EN/PWM
EN/PWM Input OFF Timeout
f
PWM
PWM Control Frequency
Duty cycle = 80%
0.65
100
0.9
325
150
20
±3
1.34
1.34
2.5
280
1.4
18
1.0
1.0
22
1.61
1.61
1.14
1.4
-1
1.18
1.22
V
V
V
μA
μs
μs
μs
ns
μs
V
V
μA
μs
ms
kHz
0.3
50
0.4
1
500
500
75
75
1.4
-1
110
0.15
1
50
0.4
1
1. The AAT3103 is guaranteed to meet performance specifications over the -40°C to 85°C operating temperature range and is assured by design, characterization and correlation
with statistical process controls.
4
www.analogictech.com
3103.2008.03.1.0
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
