Datasheet

TPS40140
www.ti.com SLUS660H –SEPTEMBER 2005–REVISED JUNE 2013
2.4 ELECTRICAL CHARACTERISTICS
–40°C ≤ T
J
≤ 85°C, (unless otherwise noted), V
VDD
= 7 V, V
BP5
= 5 V, UVLO_CE1, UCLO_CE2: 10 kΩ, Pullup to BP5,
f
SW
= 300 kHz, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDD INPUT SUPPLY
Operating Voltage Range 4.5 12 15 V
Shutdown Current UVLO_CE1 = UVLO_CE2 =GND 1 10 μA
BP5 INPUT SUPPLY
Operating Voltage Range 4.5 5.0 5.5 V
BP5 Operating Current 2 3 5 mA
Rising BP5 Turn-On 4.0 4.25 4.45 V
BP5 Turn-Off Hysteresis 100 220 400 mV
Standby Mode Current
(1)
UVLO_CEx =1.7V 2.8 mA
VREG
7 V < V
DD
<15 V 4.5 5.1 5.5 V
Output current 0 100 mA
OSCILLATOR, RT
Phase Frequency Accuracy R
RT
= 110 kΩ 300 kHz
Phase Frequency Set Range 150 1000 kHz
RT
(1)
25 kΩ ≤ R
RT
≤ 500 kΩ 0.7 V
UNDERVOLTAGE LOCKOUT (UVLO_CE1, UVLO_CE2)
Enable threshold, standby mode Internal 5VREG regulator enabled 0.5 1.0 1.5 V
UVLO threshold PWM Switching enabled 1.9 2 2.1 V
UVLO hysteresis At the UVLO_CEx pin 40 mV
UVLO_CE1, UVLO_CE2 bias
1 μA
current
(1)
PWM
2-phase, 4-phase, 8-phase or 16-phase 87.5%
Maximum duty cycle per
D
MAX
channel
(1)
3-phase, 6-phase, or 12-phase 83.3%
t
ON(min)
Minimum controllable pulse width 70 ns
PWM COMPARATOR
Input offset voltage –3 3 mV
VSHARE
I
VSHR
= 0 1.785 1.8 1.815 V
(1)
-30μA<i
VSHR
< 50μA 1.785 1.8 1.815 V
ERROR AMPLIFIER CH1, ERROR AMPLIFIER CH2
Input Common Mode Range
(1)
0 0.7 2.0 V
Input Bias Current
(1)
V
FB
= 0.7 V 10 nA
FBx Voltage
(1)
0.6965 0.700 0.7035 V
Output Source Current V
COMP
= 1.1 V, V
FB
= 0.6 V 1 2 mA
Output Sink Current V
COMP
= 1.1V, V
FB
= BP5 1 2 mA
BW
(1)
8 12 MHz
Open Loop Gain
(1)
60 90 dB
(1) Specified by design. Not production tested.
Copyright © 2005–2013, Texas Instruments Incorporated DEVICE RATINGS 5
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