TPS65166 Datasheet, PDF (3/41 Pages) Texas Instruments – Compact LCD Bias Supply for TFT-LCD TV Panels

TPS65166
www.ti.com.......................................................................................................................................................................................... SLVS976 – SEPTEMBER 2009
ELECTRICAL CHARACTERISTICS
AVIN=VIN1=VIN2=VIN3=12V, EN1=EN2=VIN, V_S=15V, V_logic=3.3V, T_A = –40°C to 85°C, typical values are at T_A = 25°C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
SUPPLY CURRENT
V_IN
I_QIN
I_sd
V_UVLO
V_UVLO
Input voltage range
Quiescent current into AVIN, VIN1,2,3
Shutdown current into AVIN, VIN1,2,3
Under-voltage lockout threshold
Under-voltage lockout threshold
Thermal shutdown
Not switching, FB=FB+5%
EN1=EN2=GND
V_IN falling
V_IN rising
Temperature rising
Thermal shutdown hysteresis
LOGIC SIGNALS EN1, EN2, HVS
V_IH
High level input voltage
V_IL
Low level input voltage
I_I
Input leakage current
POWER GOOD
V_IL
Low level voltage⁽¹⁾
I_lkg
Leakage current
SEQUENCING DLY1, DLY2, and SOFT-START
V_IN = 8.5V to 14.7V
V_IN = 8.5V to 14.7V
EN1=EN2=GND
I_(sink) = 500µA
V_PG = 5.0V
I_chrg
DLY1, DLY2 charge current
V_threshold DLY1, DLY2 threshold voltage
R_dischrg
DLY1, DLY2 discharge resistor
I_SS
Soft-start charge current
SWITCHING FREQUENCY
V_threshold = 1.24V
V_threshold = 1.24V
f_s
Switching frequency
BOOST CONVERTER (V_s)
V_s
Output voltage range
V_swovp
Switch overvoltage protection
V_s rising
V_FB1
Feedback regulation voltage
I_FB1
Feedback input bias current
V_FB1 = 1.24V
R_DS(on)
N-MOSFET on-resistance
I_SW = 500mA
I_LIM
N-MOSFET switch current limit
I_leak
Switch leakage current
V_sw = 15V
t_on
Minimum on time
Line regulation
8.5V ≤ V_IN ≤ 14.7V, I_out = 1mA
Load regulation
1mA ≤ I_out ≤ 2.0A
GATE DRIVE (GD) AND BOOST CONVERTER PROTECTION
VGD_M
V_IN – V_GD ⁽²⁾
V_IN = 12V, GD pulled down
I_(GD)
Gate drive sink current
EN2 = high
R_(GD)
Gate drive internal pull up resistance
t_on
Gate on time during short circuit
FB1 < 100mV
BUCK CONVERTER (V_logic)
V_logic
Output voltage range
V_FB2
Feedback regulation voltage
FB2 connected to resistor divider,
I_load = 10mA
I_FB2
Feedback input bias current
V_FB2 = 1.24V
R_DS(on)
N-MOSFET on-resistance
I_sw3, I_sw4 = 1.5A
MIN TYP MAX UNIT
8.5
14.7 V
1.2
mA
170
µA
8.0
8.2 V
8.2
8.5 V
150
°C
15
°C
1.7
0.01
V
0.4 V
0.1 µA
0.3 V
0.01
0.1 µA
4
4.9
6.3 µA
1.21 1.24 1.27 V
3.2
kΩ
8
10
12 µA
600
750
900 kHz
19.0
1.225
4.2
19.5
1.24
10
120
5.2
1
80
0.006
0.1
19 V
20 V
1.252 V
100 nA
170 mΩ
6.2 A
10 µA
ns
%/V
%/A
5
6
10
10
1.4
7V
µA
kΩ
ms
2.2
1.215
4.0 V
1.24 1.265 V
10
100 nA
150
250 mΩ
(1) PG goes high impedance once V_s and V_ONE are in regulation.
(2) GD goes to V_IN – V_GD once the boost converter V_s is enabled.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS65166
Submit Documentation Feedback
3