S-8821 Series
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www.ablicinc.com
© ABLIC Inc., 2002-2017
VOLTAGE REGULATION
BOOST CHARGE PUMP DC-DC CONVERTER
Rev.5.1
_03
The S-8821 series is a CMOS boost charge pump DC-DC converter with a voltage regulation function.
The S-8821 series consists of an oscillation circuit, a controller, a reference voltage circuit, an error amplifier
circuit, and an output switching transistor, and can regulate the output voltage by PFM control.
Since small ceramic capacitors can be used for the pump capacitor, input capacitor, and output capacitor, the
mounting area can be minimized.
Features
PFM control CMOS boost charge pump
Power supply voltage:
Output voltage:
Output voltage accuracy:
Built-in soft start circuit:
Output current
Oscillation frequency:
ON/OFF function:
Lead-free, Sn 100%, halogen-free
*1
1.6 to 5.0 V
2.5 to 5.5 V, selectable in 0.1 V steps.
2
% max.
1.0 ms typ.
25 mA (V
IN
=(V
OUT(S)
0.80) V)
1.0 MHz typ.
During standby: 1
A
max.
*1.
Refer to “
Product Name Structure”
for details.
Applications
Lithium ion battery driven applications
Local power supply
Power supply for white LED display backlights
Packages
SOT-23-6W
SNT-8A
1
VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER
S-8821 Series
Block Diagram
VIN
C
IN
=4.7
F
SW1
R
s
C
C
PUMP
=0.10
F
SW2
Switch
control
circuit
C
SW3
Soft start
circuit
PFM control
oscillator
circuit
(1.0 MHz)
+
-
Rev.5.1
_03
VOUT
C
OUT
=10
F
R
f
SW4
ON/OFF
circuit
Reference
voltage
ON/OFF
GND
Figure 1
2
Rev.5.1
_03
VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER
S-8821 Series
Product Name Structure
The output voltage and packages for the S-8821 Series can be selected at the user’s request. Refer to
the “Product name” for the meanings of the characters in the product name, “Package” regarding the
package drawings and “Product name list” for the full product names.
1. Product name
(1) SOT-23-6W
S-8821
xx
A MH
-
xxx
TF
x
Environmental code
S: Lead-free, halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction in tape specifications
*1
Product name (abbreviation)
*2
Package name (abbreviation)
MH: SOT-23-6W
Output voltage
25 to 55
(E.g., when the output voltage is 2.5 V, it is
expressed as 25.)
*1.
Refer to the tape specifications at the end of this book.
*2.
Refer to the product name list.
(2) SNT-8A
S-8821
xx
A PH
-
xxx
TF
U
Environmental code
U: Lead-free (Sn 100%), halogen-free
IC direction in tape specifications
*1
Product name (abbreviation)
*2
Package name (abbreviation)
PH: SNT-8A
Output voltage
25 to 55
(E.g., when the output voltage is 2.5 V, it is
expressed as 25.)
*1.
Refer to the tape specifications at the end of this book.
*2.
Refer to the product name list.
2. Package
Package Name
Drawing Code
Package
Tape
Reel
Land
SOT-23-6W
SNT-8A
MP006-B-P-SD
PH008-A-P-SD
MP006-B-C-SD
PH008-A-C-SD
MP006-B-R-SD
PH008-A-R-SD
PH008-A-L-SD
3
VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER
S-8821 Series
Rev.5.1
_03
3. Product name list
Table 1
Output Voltage
SOT-23-6W
SNT-8A
2.5 V
S-882125AMH-M2ATFz
S-882125APH-M2ATFU
3.0 V
S-882130AMH-M2FTFz
3.3 V
S-882133AMH-M2ITFz
3.5 V
S-882135AMH-M2KTFz
3.6 V
S-882136AMH-M2LTFz
4.0 V
S-882140AMH-M2PTFz
4.5 V
S-882145AMH-M2UTFz
5.0 V
S-882150AMH-M2ZTFz
S-882150APH-M2ZTFU
5.2 V
S-882152AMH-M3BTFz
5.5 V
S-882155AMH-M3ETFz
Remark 1.
Contact the ABLIC Inc. sales department for products with an output voltage other than
those specified above.
2.
z: G or S
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
4
Rev.5.1
_03
VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER
S-8821 Series
Pin Configurations
SOT-23-6W
Top view
6
5
4
Table 2
Pin No.
1
2
3
4
Symbol
VIN
C
C
ON/OFF
GND
VOUT
Pin Description
Voltage input pin
Charge-pump pump capacitor connection pin
(positive pin)
Charge-pump pump capacitor connection pin
(negative pin)
Shutdown pin
High level (H) : normal operation (boost)
Low level (L) : boost halt (all circuit halt)
GND pin
Voltage output pin
1
2
3
5
6
Figure 2
SNT-8A
Top view
1
2
3
4
8
7
6
5
Table 3
Pin Description
Charge-pump pump capacitor connection pin
1
C
(positive pin)
2
VIN
Voltage input pin
*1
3
NC
No connection
4
VOUT
Voltage output pin
Shutdown pin
5
ON/OFF
High level (H) : normal operation (boost)
Low level (L) : boost halt (all circuit halt)
6
GND
GND pin
*1
7
NC
No connection
Charge-pump pump capacitor connection pin
8
C
(negative pin)
*1.
The NC pin is electrically open.
The NC pin can be connected to VIN or GND.
Pin No.
Symbol
Figure 3
5
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