AAT3129
High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
Electrical Characteristics1
VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF; TA = -40°C to +85°C. Unless otherwise noted, typical values are TA = 25°C.
Symbol
Description
Conditions
Min
Typ Max Units
Input Power Supply
VIN
ICC
Operation Range
2.7
5.5
3
V
Operating Current
3.0 ≤ VIN ≤ 5.5, CP = 1.5X,
No Load Current
EN = 0
1
mA
ISHDN
ISRC
Shutdown Current
1
5
µA
%
Output Current Accuracy
3.0 ≤ VIN ≤ 5.5
-5
Charge Pump
TS
Start-Up Delay Time
Clock Frequency
Efficiency
200
1
µs
MHz
%
FCLK
η
VIN = 3.5V
93
Switches
RDS(ON)
EN/SET
VEN(L)
Switch On Resistance
VIN = 3.5V, TA = 25°C
1.5
0.4
75
Ω
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
VIN = 2.7V
VIN = 5.5V
V
V
VEN(H)
1.4
0.3
TEN/SET LO
TEN/SET HI MIN
TOFF
µs
ns
µs
µs
µA
Minimum EN/SET High Time
EN/SET Off Timeout
50
500
500
1
TLAT
EN/SET Latch Timeout
EN/SET Input Leakage
IEN/SET
VEN/SET = 5.5V, VIN = 5.5V
-1
1. The AAT3129 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
3129.2005.11.1.3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
