AAT3192/93
Low-Cost, 2-/3-Channel
Charge-Pump LED Drivers
1
Electrical Characteristics
IN = EN = 3.6V; CIN = 1µF; COUT = 1µF; CCP = 1µF; RSET = 14.3kΩ; TA =-40°C to 85°C unless otherwise noted.
Typical values are at TA = 25°C.
Symbol
Description
Conditions
Min
Typ Max Units
Input Power Supply
IN
Input Voltage Range
2.7
5.5
5
V
EN = IN, ID1 = ID2 = ID3
OFF (WLED Test Mode)
EN = IN, ID1 = ID2 = ID3 = FS
Operating, ID1 = ID2 = ID3
OPEN; IN = 5V
EN/SET or EN/PWM = GND
=
mA
mA
mA
μA
IIN
Input Operating Current
Input Shutdown Current
1.5
4.5
1
=
IIN(SHDN)
Charge Pump Section
IOUT OUT Maximum Output Current
fOSC
100
0.9
115
150
mA
MHz
mV
μs
Charge Pump Oscillator Frequency
Charge Pump Mode Hysteresis
Output Start-Up Time
0.65
17.6
1.15
250
VIN (TH)
ID1 = ID2 = ID3= 20mA
EN/SET or EN/PWM = IN
_
tOUT
AAT3192/93-1/-2/-4: LED Current Sink Outputs
ID (MAX)
D1 - D3 Current Accuracy
D1 - D3 Current Matching
D1 - D3 Current Accuracy
(AAT3192/93-1 only)
D1 - D3 Current Accuracy
(AAT3192/93-2 only)
DATA = 1; VIN - VF = 1.5V
DATA = 1; VIN - VF = 1.5V
19.6
3
21.6
mA
ꢀ
_
ΔID (MAX)
_
ID_(DATA15)
ID_(DATA8)
ID_(10ꢀ)
DATA = 15; VIN - VF = 1.5V
DATA = 8; VIN - VF = 1.5V
DC = 10ꢀ; VIN - VF = 1.5V
ID1 = ID2 = ID3 = 20mA
1.0
1.0
1.3
1.3
2.5
150
1.56
1.56
mA
mA
mA
mV
D1 - D3 Current Accuracy
(AAT3192/93-4 only)
D1- D3 Charge Pump Mode
Transition Threshold
VD_(TH)
1. The AAT3192/93 are guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and are
assured by design, characterization and correlation with statistical process controls.
4
3193.2007.05.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
