S-85S1P Series
www.ablic.com
© ABLIC Inc., 2017-2018
SUPPLY VOLTAGE DIVIDED OUTPUT,
5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN
SWITCHING REGULATOR WITH 260 nA QUIESCENT CURRENT
Rev.1.5
_01
The S-85S1P Series introduces own distinctive low power consumption control and COT (Constant On-Time) control and
features ultra low current consumption and fast transient response. PWM / PFM switching control automatically switches to
PFM control when under light load, and the IC operates at ultra low current consumption of 260 nA quiescent current. The
S-85S1P Series realizes high efficiency in a wide range of load current consumption and provides strong support for
extended period operation of mobile devices and wearable devices which are equipped with compact batteries.
The function of the supply voltage divided output is prepared in the S-85S1P Series. The supply voltage divided output is a
function that divides the input voltage (V
IN
) of the DC-DC converter into V
IN
/2 or V
IN
/3 and outputs the voltage. For example,
this function makes it possible that the IC connects to a low voltage microcontroller A/D converter directly and the
microcontroller monitors a battery voltage.
Features
DC-DC converter block
•
Ultra low current consumption:
•
Efficiency (when under 100
μA
load):
•
Fast transient response:
•
Input voltage:
•
Output voltage:
260 nA quiescent current
90.5%
COT control
2.2 V to 5.5 V
0.7 V to 2.5 V, in 0.05 V step
2.6 V to 3.9 V, in 0.1 V step
•
Output voltage accuracy:
±1.5%
(1.0 V
≤
V
OUT
≤
3.9 V)
±15
mV (0.7 V
≤
V
OUT
<
1.0 V)
•
Switching frequency:
1.0 MHz (at PWM operation)
•
High side power MOS FET on-resistance:
420 mΩ
•
Low side power MOS FET on-resistance:
320 mΩ
•
Soft-start function:
1 ms typ.
•
Under voltage lockout function (UVLO):
1.8 V typ. (detection voltage)
135°C typ. (detection temperature)
•
Thermal shutdown function:
•
Overcurrent protection function:
450 mA (at L = 2.2
μH)
•
Automatic recovery type short-circuit protection function:Hiccup control
•
Input and output capacitors:
Ceramic capacitor compatible
280 nA typ.
1.5 V to 5.5 V
V
IN
/2 (S-85S1PCxx)
V
IN
/3 (S-85S1PDxx)
Ta =
−40°C
to
+85°C
Applications
•
Wearable device
•
Bluetooth device
•
Wireless sensor network device
•
Healthcare equipment
•
Smart meter
•
Portable game device
Package
•
SNT-8A
( 2.46 mm
×
1.97 mm
×
t0.5 mm max.)
Supply voltage divider block
•
Low current consumption:
•
Input voltage:
•
Output voltage:
Overall
•
Operation temperature range:
•
Lead-free (Sn 100%), halogen-free
Typical Application Circuit
V
IN
C
IN
10
F
L
2.2
H
VIN
PVSS
EN
PMEN
VSS
PMOUT
C
PM
0.22
F
SW
VOUT
V
OUT
C
OUT
10
F
Efficiency
V
OUT(S)
= 1.8 V
100
80
60
40
20
0
0.01
V
IN
= 2.5 V
V
IN
= 3.6 V
V
IN
= 4.2 V
0.1
1
10
I
OUT
[mA]
100
1000
1
SUPPLY VOLTAGE DIVIDED OUTPUT, 5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 260 nA QUIESCENT CURRENT
Rev.1.5
_01
S-85S1P Series
Product Name Structure
Users can select supply voltage divider block output voltage and DC-DC converter block output voltage for the
S-85S1P Series. Refer to "1.
Product name"
regarding the contents of product name, "2.
Package"
regarding
the package, "3.
Product name list"
regarding details of the product name.
1.
Product name
S-85S1P x xx
-
I8T1
U
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package name abbreviation and packing specification
*1
I8T1: SNT-8A, Tape
DC-DC converter block output voltage
07 to 39
(e.g., when the output voltage is 0.7 V, it is expressed as 07.)
Supply voltage divider block output voltage
C: V
IN
/2
D: V
IN
/3
*2, *3
*1.
*2.
*3.
Refer to the tape drawing.
Refer to "3.
Product name list".
In the range from 0.7 V to 2.5 V, the products which have 0.05 V step are also available.
Contact our sales office when the product is necessary.
2.
Package
Table 1
Package Name
SNT-8A
Dimension
PH008-A-P-SD
Package Drawing Codes
Tape
PH008-A-C-SD
Reel
PH008-A-R-SD
Land
PH008-A-L-SD
3
SUPPLY VOLTAGE DIVIDED OUTPUT, 5.5 V INPUT, 200 mA SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR WITH 260 nA QUIESCENT CURRENT
Rev.1.5
_01
S-85S1P Series
Pin Configuration
1.
SNT-8A
Table 3
Top view
1
2
3
4
8
7
6
5
Figure 2
Pin No.
1
2
3
4
5
6
7
Symbol
PMOUT
VOUT
VSS
SW
PVSS
VIN
EN
8
PMEN
Description
Supply voltage divided output pin
Voltage output pin
GND pin
External inductor connection pin
Power GND pin
Power supply pin
Enable pin
"H"
: Enable (normal operation)
"L"
: Disable (standby)
Supply voltage divided output enable pin
"H"
: Enable (normal operation)
"L"
: Disable (standby)
5
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