參數(shù)資料
型號： TPS62122DRV
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, PDSO6
封裝： 2 X 2 MM, GREEN, PLASTIC, SON-6
文件頁數(shù)： 28/33頁
文件大?。?/td> 5549K
代理商： TPS62122DRV
SLVSAD5 – JULY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VIN = 8V, VOUT = 1.8V, EN = VIN, TJ = –40°C to 85°C, typical values are at TJ = 25°C (unless otherwise noted), CIN = 4.7F,
L = 22H, COUT = 4.7F, see Parameter Measurement Information
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
REGULATOR
tONmin
Minimum ON time
VIN = 3.6 V, VOUT = 1.8 V
700
ns
tOFFmin
Minimum OFF time
VIN = 3.6 V, VOUT = 1.8 V
60
ns
VREF
Internal reference voltage
0.8
V
Feedback FB voltage comparator
Referred to 0.8V internal reference
–2.5%
0% 2.5%
threshold
VFB
Feedback FB voltage line regulation
IOUT = 50 mA,
(3)
0.04
%/V
IIN
Input bias current FB
VFB = 0.8 V
0
50
nA
Time from active EN to device starts switching, VIN
tStart
Regulator start-up time
50
150
= 2.6V
s
tRamp
Output voltage ramp time
Time to ramp up VOUT = 1.8V, no load
(4)
120
300
VOUT = VIN = VSW = 1.8 V, EN = GND, device in
ILK_SW
Leakage current into SW pin
1
1.5
A
shutdown mode
POWER GOOD OUTPUT (TPS62120)
Rising VFB feedback voltage
93%
95%
97%
VTHPG
Power Good threshold voltage
Falling VFB feedback voltage
87%
90%
93%
Current into PG pin I = 500 A, VOUT > 1.5 V
165
VOL
Output low voltage
mV
Current into PG pin I = 100 A, 1.2 V < VOUT <1.5 V
50
VH
Output high voltage
Open drain output, external pull up resistor
5.5
V
Leakage current into PG pin
V(PG) = 1.8V, EN = high, FB = 0.85 V
0
50
nA
ILKG
Leakage into VOUT pin
V(OUT) = 1.8 V
0
50
nA
Internal power good comparator delay
TPGDL
VOUT = 1.8 V
2
5
s
time
SGND OPEN DRAIN OUTPUT (TPS62120)
RDSON
NMOS drain source resistance
SGND = 1.8 V, VIN = 2 V
370
ILKG
Leakage current into SGND pin
EN = VIN, SGND = 1.8 V
0
50
nA
(3)
VOUT +1V ≤ VIN ; VOUT ≤ 5.5V
(4)
Maximum value not production tested
4
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS62120 TPS62122
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