H8116 Synchronous Step-Up DC-
DC Converter with PFM Control
Features
External parts:Coil, capacitor
Output voltage: Settable to between 2.1V to
5.5V in 0.1V steps
Maximum Oscillation frequency :300KHz
Digital cameras
Electronic notebooks and PDAS
Portable CD/MD players
Cameras , video equipment
Communications equipment
Power supply for microcomputers
Accuracy of
±2%
High efficiency :95%
Package: SOT23,SOT23-3 and TO92
Applications
General Description
The H8116 Series is a Synchronous step-up
DC/DC Converter with PFM Control.With the
H8116 Series, a step-up switching DC/DC
converter can be configured by using an external
coil, capacitor. The built-in MOSFET is turned off
by a protection circuit when the voltage at the LX
pin exceeds the limit to prevent it from being
damaged.
Block Diagram
Order Information
H8116①②③④⑤
Designator
①
②③
SI
Symbol
A
Integer
T
④
M
N
R
G
Description
Standard
Output Voltage (2.1V~5.5V)
e.g:3.0V=②：3；③：0
Package:TO-92
Package:SOT23-3
Package:SOT23
RoHS / Pb Free
Halogen Free
⑤
1
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Shanghai Siproin Microelectronics Co.
Ver1.3
PR
O
IN
H8116 Synchronous Step-Up DC-
DC Converter with PFM Control
Pin Assignment
SOT23 or SOT23-3
1
Table1 H8116A
PIN NO.
1
2
3
PIN NAME
VOUT
Vss
LX
series (SOT23/SOT23-3 PKG)
FUNCTION
Output voltage pin
GND pin
External inductor connection pin
2
3
TO92
Table2 H8116A
PIN NO.
1
2
3
PIN NAME
Vss
series (TO92
PKG)
FUNCTION
GND pin
1 2
3
Absolute Maximum Ratings
PARAMETER
PR
SYMBOL
V
OUT
EN
V
LX
I
LX
SOT23
SOT23-3
TO-92
T
OPR
T
STG
T
SOLDER
PD
O
(Unless otherwise specified, Ta=25℃)
RATINGS
V
SS
-0.3~V
SS
+8
V
SS
-0.3~V
SS
+8
V
SS
-0.3~V
SS
+8
1000
250
250
500
-40~+85
-40~+125
260℃，10s
UNITS
V
V
V
mA
mW
mW
mW
℃
℃
VOUT Pin Voltage
EN Pin Voltage
LX Pin Voltage
Dissipation
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum
Ratings” may cause substantial damage to the device. Functional operation of this device at other
conditions beyond those listed in the specification is not implied and prolonged exposure to extreme
conditions may affect device reliability.
Ver1.3
SI
LX Pin Current
Power
Operating Temperature
Storage Temperature
Soldering Temperature & Time
2
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7
IN
VOUT
LX
Output voltage pin
External inductor connection pin
Shanghai Siproin Microelectronics Co.
H8116 Synchronous Step-Up DC-
DC Converter with PFM Control
Electrical Characteristics
(
Unless otherwise specified，Ta = 25℃)
PARAMETER
SYMBOL
MIN
V
OUT(S)
×0.98
-
TYP
MAX
V
OUT(S)
×1.02
7.5
0.9
1.2
25
35
10
1.0
UNITS
CONDITION
Output Voltage
V
OUT
V
OUT
V
-
Input Voltage
Operation Start Voltage
Operation Start Voltage
Input Current At No Load
Current Consumption 2
Current Consumption
During Shutdown
Maximum Oscillation
Frequency
Duty Ratio1
Efficiency
V
IN
V
ST1
V
ST1
I
SS
I
SS2
I
SSS
-
-
-
-
15
25
V
V
V
uA
uA
uA
uA
-
I
OUT
=1mA V
OUT
=2.2V~4.2V
I
OUT
=1mA V
OUT
=4.2V~5.5V
V
IN
=1.8V, V
OUT
=3.0V
V
IN
=0.9V, V
OUT
=3.0V
V
OUT
=V
OUT
+0.5V
V
EN
=0V
V
OUT
=0.95xV
OUT
, measure
Waveform at LX pin
V
OUT
=0.95xV
OUT
-
-
-
6
-
fosc
Duty1
EFF1
V
SH
70
300
78
90
-
O
0.75
-
-
-
0.3
0.1
0.1
-0.1
-
-0.1
-
Shutdown Pin Input
Voltage
PR
V
SL1
I
SH
I
SL
IN
KHz
%
85
%
V
V
uA
uA
V
OUT
=0.95xV
OUT
, judge
Oscillation at LX pin
V
OUT
=0.95xV
OUT
, judge
stop at LX pin
V
EN
=6V
V
EN
=0V
Shutdown Pin input
Current
Remark: VOUT(S) specified above is the set output voltage value,and VOUT is the typical value of the
actual output voltage
Application Circuits
H8116A
Ver1.3
SI
3
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7
Shanghai Siproin Microelectronics Co.
H8116 Synchronous Step-Up DC-
DC Converter with PFM Control
TYPICAL PERFORMANCE CHARACTERISTICS
(Cin=Cout=100uF,L=47uH)
Ver1.3
SI
4
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7
Shanghai Siproin Microelectronics Co.
PR
O
IN
H8116 Synchronous Step-Up DC-
DC Converter with PFM Control
Package Information
3-pin SOT23 Outline Dimensions
Ver1.3
SI
5
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7
Shanghai Siproin Microelectronics Co.
PR
O
IN
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