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S-85S1AB39-I6T1U Datasheet(PDF) 7 Page - Seiko Instruments Inc

Part # S-85S1AB39-I6T1U
Description  5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 260 nA QUIESCENT CURRENT
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-85S1AB39-I6T1U Datasheet(HTML) 7 Page - Seiko Instruments Inc

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5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 260 nA QUIESCENT CURRENT
Rev.1.2_00
S-85S1A Series
7
Electrical Characteristics
Table 6
(VIN = 3.6 V
*1, Ta = +25°C unless otherwise specified)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Operating input voltage
VIN
2.2
3.6
5.5
V
Output voltage
*2
VOUT
1.0 V
VOUT 3.9 V, no external parts
VOUT(S)
× 0.985
VOUT(S)
VOUT(S)
× 1.015
V
0.7 V
VOUT <1.0 V, no external parts
VOUT(S)
− 0.015
VOUT(S)
VOUT(S)
+ 0.015
V
Current consumption
at shutdown
ISSS
VEN = 0 V
1
100
nA
Current consumption
at switching off
ISS1
VOUT = VOUT(S)
+ 0.1 V, VEN = VIN,
no external parts,
no switching operation
260
500
nA
High level input voltage
VSH
VIN = 2.2 V to 5.5 V, EN pin
1.1
V
Low level input voltage
VSL
VIN = 2.2 V to 5.5 V, EN pin
0.3
V
High level input current
ISH
VIN = 2.2 V to 5.5 V, EN pin, VEN = VIN
−100
100
nA
Low level input current
ISL
VIN = 2.2 V to 5.5 V, EN pin, VEN = 0 V
−100
100
nA
High side power
MOS FET on-resistance
RHFET
ISW = 100 mA
420
m
Ω
Low side power
MOS FET on-resistance
RLFET
ISW =
−100 mA
320
m
Ω
High side power
MOS FET leakage current
IHSW
VIN = 2.2 V to 5.5 V, VEN = 0 V, VSW = 0 V
1
100
nA
Low side power
MOS FET leakage current
ILSW
VIN = 2.2 V to 5.5V, VEN = 0 V, VSW = VIN
−100
1
nA
Current limit
*3
ILIM
L = 2.2
μH
450
mA
ON time
*4
tON
tON(S) = 1/fSW
*5 × VOUT/VIN,
VOUT = VOUT(S)
× 0.9
tON(S)/1.3
tON(S)
tON(S)/0.7
ns
Minimum OFF time
tOFF(MIN)
100
ns
UVLO detection voltage
VUVLO− When VIN falls
1.7
1.8
1.9
V
UVLO release voltage
VUVLO+ When VIN rises
1.9
2.0
2.1
V
UVP detection voltage
VUVP
VOUT(S)
× 0.7
V
Soft-start wait time
tSSW
Time until VOUT starts rising
1.5
ms
Soft-start time
tSS
Time until VOUT reaches 90% after it
starts rising
1.0
ms
Thermal shutdown
detection temperature
TSD
Junction temperature
135
°C
Thermal shutdown
release temperature
TSR
Junction temperature
115
°C
*1. VIN = VOUT(S)
+ 1.0 V (VOUT(S)
2.6 V)
*2. VOUT: Actual output voltage
VOUT(S): Set output voltage
*3. The current limit changes according to the L value for the inductor to be used, input voltage, and output voltage.
Refer to " Operation" for details.
*4. tON: Actual ON time
tON(S): Set ON time
*5. fSW: Switching frequency (1 MHz)


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