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参数资料
型号： TPS65148RHBR
厂商： TEXAS INSTRUMENTS INC
元件分类： 电源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32
封装： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件页数： 23/30页
文件大小： 947K
代理商： TPS65148RHBR
TPS65148
www.ti.com
SLVS904A – MAY 2009 – REVISED JANUARY 2011
ELECTRICAL CHARACTERISTICS
VIN = 5 V, VREG_I = VS = VSUP = 13.6 V, VREG_O = 12.5 V, VOPI = 5 V, VGH = 23 V, TA = –40°C to 85°C, typical values are at
TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY
VIN
Input voltage range
2.5
6
V
IQVIN
Operating quiescent current into VIN
Device not switching, VFB = 1.240 V + 5%
0.23
0.5
mA
IQSUP
Operating quiescent current into SUP
Device not switching, VFB = 1.240 V + 5%
3
6
mA
IQVGH
Operating quiescent current into VGH
VGH = 24 V, VFLK = 'high'
30
60
mA
IQREG_I
Operating quiescent current into REG_I
REG_O = 'open', VREG_FB = 1.240 V + 5%
0.05
3
mA
ISDVIN
Shutdown current into VIN
VIN = 6 V, EN = GND
35
70
mA
ISDSUP
Shutdown current into SUP
VIN = 6 V, EN = GND, VSUP = 6 V
1
2.5
mA
ISDVGH
Shutdown current into VGH
VIN = 6 V, EN = GND, VGH = 6 V
20
40
mA
ISDREG_I
Shutdown current into REG_I
VIN = 6 V, EN = GND, VREG_I = 6 V,
4
10
mA
VREG_O = 4.9 V
VIN rising
2.1
2.3
VUVLO
Under-voltage lockout threshold
V
Hysterisis
0.1
TSD
Thermal shutdown
Temperature rising
150
°C
TSDHYS
Thermal shutdown hysteresis
14
°C
LOGIC SIGNALS EN, FREQ, VFLK, HVS
ILEAK
Input leakage current
EN = FREQ = VFLK = HVS = 6 V
0.1
mA
VIH
Logic high input voltage
VIN = 2.5 V to 6 V
2
V
VIL
Logic low input voltage
VIN = 2.5 V to 6 V
0.4
V
BOOST CONVERTER (VS)
VS
Output voltage boost converter
18
V
VOVP
Overvoltage protection
VS rising
18.2
19
19.8
V
VFB
Feedback regulation voltage
1.228
1.240
1.252
V
IFB
Feedback input bias current
VFB = 1.240V
0.1
mA
gm
Transconductiance error amplifier gain
107
mA/V
VIN = VGS = 5 V, ISW = 'current limit'
0.12
0.18
rDS(on)
N-channel MOSFET on-resistance
VIN = VGS = 3.3 V, ISW = 'current limit'
0.14
0.22
ILEAK_SW
SW leakage current
EN = GND, VSW = 18.5 V
30
mA
ILIM
N-Channel MOSFET current limit
4.0
4.8
5.6
A
ISS
Softstart current
VSS = 1.240 V
10
mA
FREQ = 'high'
0.9
1.2
1.5
MHz
f
Switching frequency
FREQ = 'low'
470
630
790
kHZ
Line regulation
VIN = 2.5 V to 6 V, IOUT = 1 mA
0.015
%/V
Load regulation
IOUT = 0 A to 1.3 A
0.22
%/A
LDO - VOLTAGE REGULATOR FOR GAMMA BUFFER (VREG_O)
VREG_O
LDO output voltage range
7
17.6
V
VREG_I = 10 V to 18V, REG_O = REG_FB,
1.228
1.240
1.252
IREG_O = 1 mA, TA = -40°C to 85°C
VREG_FB
Feedback regulation voltage
V
VREG_I = 10 V to 18V, REG_O = REG_FB,
1.234
1.240
1.246
IREG_O = 1 mA, TA = 25°C
IREG_FB
Feedback input bias current
VREG_FB = 1.240 V
0.1
mA
ISC_REG
Short circuit current limit
VREG_I = 18 V, REG_O = REG_FB = GND
90
mA
VDO
Dropout voltage
VREG_I = 18 V, IREG_O = 30 mA
400
mV
Line regulation
VREG_I = 13.6 V to 18 V, IREG_O = 1 mA
0.003
%/V
Load regulation
IREG_O = 1 mA to 50 mA
0.28
%/A
GATE VOLTAGE SHAPING (VGHM)
IDPM
Capacitor charge current VDPM pin
20
mA
rDS(on)M1
VGH to VGHM rDS(on) (M1 PMOS)
VFLK = 'high', IVGHM = 20 mA, VGH = 20 V
13
25
rDS(on)M2
VGHM to RE rDS(on) (M2 PMOS)
VFLK = 'low', IVGHM = 20 mA, VGHM = 7.5 V
13
25
Copyright 2009–2011, Texas Instruments Incorporated
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