TPS51216
SLUSAB9 –NOVEMBER 2010
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ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VV5IN=5V, VLDOIN is connected to VDDQ output, VMODE=0V, VS3=VS5=5V (unless
otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX UNIT
SUPPLY CURRENT
IV5IN(S0)
V5IN supply current, in S0
V5IN supply current, in S3
V5IN shutdown current
TA = 25°C, No load, VS3 = VS5 = 5 V
TA = 25°C, No load, VS3 = 0 V, VS5 = 5 V
TA = 25°C, No load, VS3 = VS5 = 0 V
TA = 25°C, No load, VS3 = VS5 = 5 V
TA = 25°C, No load, VS3 = 0 V, VS5 = 5 V
TA = 25°C, No load, VS3 = VS5 = 0 V
590
500
mA
mA
IV5IN(S3)
IV5INSDN
1
5
5
5
mA
mA
mA
mA
IVLDOIN(S0)
IVLDOIN(S3)
IVLDOINSDN
VREF OUTPUT
VLDOIN supply current, in S0
VLDOIN supply current, in S3
VLDOIN shutdown current
IVREF = 30 mA, TA = 25°C
1.8000
VVREF
Output voltage
Current limit
0 mA ≤ IVREF <300 mA, TA = –10°C to 85°C
0 mA ≤ IVREF <300 mA, TA = –40°C to 85°C
VVREF = 1.7 V
1.7856
1.7820
0.4
1.8144
1.8180
V
mA
V
IVREFOCL
0.8
VTTREF OUTPUT
VVTTREF
Output voltage
VVDDQSNS/2
|IVTTREF| <100 mA, 1.2 V ≤ VVDDQSNS ≤ 1.8 V
|IVTTREF| <10 mA, 1.2 V ≤ VVDDQSNS ≤ 1.8 V
VVDDQSNS = 1.8 V, VVTTREF= 0 V
49.2%
49%
10
50.8%
51%
VVTTREF
Output voltage tolerance to VVDDQ
IVTTREFOCLSRC
IVTTREFOCLSNK
IVTTREFDIS
Source current limit
Sink current limit
18
17
mA
mA
mA
VVDDQSNS = 1.8 V, VVTTREF = 1.8 V
10
VTTREF discharge current
TA = 25°C, VS3 = VS5 = 0 V, VVTTREF = 0.5 V
0.8
1.3
VTT OUTPUT
VVTT
Output voltage
VVTTREF
V
|IVTT| ≤ 10 mA, 1.2 V ≤ VVDDQSNS ≤ 1.8 V, IVTTREF = 0 A
|IVTT| ≤ 1 A, 1.2 ≤ VVDDQSNS ≤ 1.8 V, IVTTREF = 0 A
|IVTT| ≤ 2 A, 1.4 V ≤ VVDDQSNS ≤ 1.8 V, IVTTREF = 0 A
|IVTT| ≤ 1.5 A, 1.2 V ≤ VVDDQSNS ≤ 1.4 V, IVTTREF = 0 A
–20
–30
–40
–40
20
30
40
40
VVTTTOL
Output voltage tolerance to VTTREF
mV
VVDDQSNS = 1.8 V, VVTT = VVTTSNS = 0.7 V,
IVTTREF = 0 A
IVTTOCLSRC
Source current limit
2
2
3
3
A
IVTTOCLSNK
IVTTLK
IVTTSNSBIAS
IVTTSNSLK
Sink current limit
VVDDQSNS = 1.8V, VVTT = VVTTSNS = 1.1 V, IVTTREF = 0 A
TA = 25°C , VS3 = 0 V, VS5 = 5 V, VVTT = VVTTREF
VS3 = 5 V, VS5 = 5 V, VVTTSNS = VVTTREF
Leakage current
5
0.5
1
VTTSNS input bias current
VTTSNS leakage current
–0.5
–1
0.0
0
mA
VS3 = 0 V, VS5 = 5 V, VVTTSNS = VVTTREF
TA = 25°C, VS3 = VS5 = 0 V, VVDDQSNS = 1.8 V,
VVTT = 0.5 V, IVTTREF = 0 A
IVTTDIS
VTT Discharge current
7.8
mA
VDDQ OUTPUT
VVDDQSNS
VDDQ sense voltage
VREFIN
VDDQSNS regulation voltage
tolerance to REFIN
VVDDQSNSTOL
TA = 25°C
–3
3
mV
IVDDQSNS
IREFIN
VDDQSNS input current
REFIN input current
VVDDQSNS = 1.8 V
VREFIN = 1.8 V
39
mA
mA
–0.1
0.0
0.1
VS3 = VS5 = 0 V, VVDDQSNS = 0.5 V, MODE pin pulled
down to GND through 47kΩ (Non-tracking)
IVDDQDIS
VDDQ discharge current
VLDOIN discharge current
12
mA
A
VS3 = VS5 = 0 V, VVDDQSNS = 0.5 V, MODE pin pulled
down to GND through 100kΩ (Non-tracking)
IVLDOINDIS
1.2
SWITCH MODE POWER SUPPLY (SMPS) FREQUENCY
VIN = 12 V, VVDDQSNS = 1.8 V, RMODE = 100 kΩ
VIN = 12 V, VVDDQSNS = 1.8 V, RMODE = 200 kΩ
DRVH rising to falling(1)
300
400
60
fSW
VDDQ switching frequency
kHz
ns
tON(min)
Minimum on time
Minimum off time
tOFF(min)
DRVH falling to rising
200
320
450
(1) Ensured by design. Not production tested.
4
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