SI9160 Datasheet, PDF (6/11 Pages) Vishay Siliconix – Controller for RF Power Amplifier Boost Converter

Si9160
Vishay Siliconix
PIN CONFIGURATION AND ORDERING INFORMATION
TSSOP-16
V_DD 1
N/C 2
D_MAX 3
COMP 4
FB 5
NI 6
V_REF 7
GND 8
16 V_S
15 D_R
14 D_S
13 P_GND
12 UVLO_SET
11 C_OSC
10 R_OSC
9 ENABLE
ORDERING INFORMATION
Part Number Temperature Range
Package
Si9160BQ-T1
Si9160BQ-T1—E3
−25 to 85_C
TSSOP-16
Top View
Order Number: Si9160BQ-T1
PIN DESCRIPTION
Pin 1: V_DD
The positive power supply for all functional blocks except
output driver. A bypass capacitor of 0.1 mF (minimum) is
recommended.
Pin 2: N/C
There is no internal connection to this pin.
Pin 3: D_MAX
Used to set the maximum duty cycle.
Pin 4: COMP
This pin is the output of the error amplifier. A compensation
network is connected from this pin to the FB pin to stabilize the
system. This pin drives one input of the internal pulse width
modulation comparator.
Pin 5: FB
The inverting input of the error amplifier. An external resistor
divider is connected to this pin to set the regulated output
voltage. The compensation network is also connected to this
pin.
Pin 6: NI
The non-inverting input of the error amplifier. In normal
operation it is externally connected to V_REF or an external
reference.
Pin 7: V_REF
This pin supplies a 1.5-V reference.
Pin 8: GND (Ground)
Pin 9: ENABLE
A logic high on this pin allows normal operation. A logic low
places the chip in the standby mode. In standby mode, normal
operation is disabled, supply current is reduced, the oscillator
stops, and D_S goes low while D_R goes high.
Pin 10: R_OSC
A resistor connected from this pin to ground sets the
oscillator’s capacitor (C_OSC) charge and discharge current.
See the oscillator section of the description of operation.
Pin 11: C_OSC
An external capacitor is connected to this pin to set the
oscillator frequency.
0.70
f_OSC ] _{ROSC COSC}
(at V_DD = 5.0 V)
Pin 12: UVLO_SET
This pin will place the chip in the standby mode if the UVLO_SET
voltage drops below 1.2 V. Once the UVLO_SET voltage
exceeds 1.2 V, the chip operates normally. There is a built-in
hysteresis of 200 mV.
Pin 13: P_GND
The negative return for the V_S supply.
Pin 14: D_S
This CMOS push-pull output pin drives the external n-channel
MOSFET. This pin will be low in the standby mode. A
break-before-make function between D_S and D_R is built-in.
Pin 15: D_R
This CMOS push-pull output pin drives the external p-channel
MOSFET. This pin will be high in the standby mode. A
break-before-make function between the D_S and D_R is built-in.
Pin 16: V_S
The positive terminal of the power supply which powers the
CMOS output drivers. A bypass capacitor is required.
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Document Number: 70029
S-40700—Rev. H, 19-Apr-04