TPS61088-Q1
ZHCSIC0A –SEPTEMBER 2018–REVISED NOVEMBER 2018
www.ti.com.cn
7.5 Electrical Characteristics
Minimum and maximum values are at VIN = 2.7 V to 12 V and TJ = -40°C to 125°C. Typical values are at VIN = 3.6 V and TJ =
25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
POWER SUPPLY
VIN
Input voltage range
2.7
12
2.7
2.5
V
V
VIN rising
VIN falling
Undervoltage lockout (UVLO)
threshold
VIN_UVLO
2.4
200
2.1
V
VIN_HYS
VIN UVLO hysteresis
UVLO threshold
mV
V
VCC_UVLO
VCC falling
Operating quiescent current from the
VIN pin
1
3
µA
µA
IC enabled, VEN = 2 V, no load, RILIM = 100
kΩ , VFB = 1.3 V, VOUT = 12 V, TJ up to 125°C
IQ
Operating quiescent current from the
VOUT pin
110
250
IC disabled, VEN = 0 V, no load, no feedback
resistor divider connected to the VOUT pin, TJ
up to 125°C
ISD
Shutdown current into the VIN pin
1
3.5
µA
V
VCC
VCC regulation
IVCC = 5 mA, VIN = 8 V
5.8
EN AND MODE INPUT
VENH
EN high threshold voltage
VCC = 6 V
VCC = 6 V
VCC = 6 V
VCC = 6 V
VCC = 6 V
VCC = 6 V
1.2
4.0
V
V
VENL
EN low threshold voltage
0.4
1.5
REN
EN internal pull-down resistance
MODE high threshold voltage
MODE low threshold voltage
MODE internal pull-up resistance
800
800
kΩ
V
VMODEH
VMODEL
RMODE
OUTPUT
VOUT
V
kΩ
Output voltage range
4.5
12.6
V
V
PWM mode
PFM mode
VFB = 1.2 V
1.186
1.204
1.212
1.222
VREF
Reference voltage at the FB pin
ILKG_FB
ISS
FB pin leakage current
100
nA
Soft-start charging current
5
μA
ERROR AMPLIFIER
ISINK
COMP pin sink current
COMP pin source current
VFB = VREF +200 mV, VCOMP = 1.5 V
VFB = VREF –200 mV, VCOMP = 1.5 V
20
20
µA
µA
ISOURCE
VCCLPH
High clamp voltage at the COMP pin VFB = 1 V, RILIM = 49.9 kΩ
2.3
V
VFB = 1.5 V, RILIM = 49.9 kΩ, MODE pin
floating
VCCLPL
Low clamp voltage at the COMP pin
Error amplifier transconductance
1.4
GEA
POWER SWITCH
High-side MOSFET on-resistance
Low-side MOSFET on-resistance
CURRENT LIMIT
Peak switch current limit in PFM
VCOMP = 1.5 V
190
µA/V
VCC = 6 V
VCC = 6 V
19.5
18.0
29.7
27.5
mΩ
mΩ
RDS(on)
RILIM = 49.9 kΩ, VCC = 6 V, MODE pin floating
10.0
7.2
11.4
13.0
10.5
A
mode
ILIM
Peak switch current limit in FPWM
mode
RILIM = 49.9 kΩ, VCC = 6 V, MODE pin short to
ground
8.7
0.6
A
V
VILIM
Reference voltage at the ILIM pin
SWITCHING FREQUENCY
RFREQ =301 kΩ, VIN = 5.0 V, VOUT = 9.0 V
RFREQ =53.6 kΩ, VIN = 5.0 V, VOUT = 9.0 V
RFREQ =301 kΩ, VIN = 5.0 V, VOUT = 9.0 V
500
2000
90
kHz
kHz
ns
ƒSW
Switching frequency
Minimum on-time
tON_min
160
6
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