DICE/DWF SPECIFICATION
RH1959MILDICE
4.5A, 500KHz Step-Down
Switching Regulator
PAD FUNCTION
DIE CROSS REFERENCE
1. GND
2. VC
LTC Finished
Order
1
Part Number
Part Number
3. SHDN
4. FB
RH1959MK
RH1959MK
RH1959MILDICE
RH1959MILDWF*
2
3
5. SYNC
6. BOOST
7. VIN
Please refer to LTC standard product data sheet for
other applicable product information.
*DWF = DICE in wafer form.
4
6
5
8. SW
7
7
7
80mils × 138mils,
Backside metal: Alloyed gold layer
Backside potential: GND
8
8
8
8
7
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
DESCRIPTION
The RH1959 is a 500kHz monolithic buck mode switching
regulator with an on-die 4.5A switch. It can accept inputs
bipolar process and new design techniques achieve high
efficiency at high switching frequency. High efficiency is
maintained over a wide output current range by keeping
quiescent supply current to 4mA and by utilizing a boost
capacitor to saturate the NPN power switch. Full cycle-
by-cycle short-circuit protection and thermal shutdown
are provided for safe operation in overload conditions.
A shutdown signal reduces supply current to 20µA while
synchronizationallowsanexternallogiclevelsignaltovary
adjust switching frequency between 580kHz and 1MHz.
up to 16V to generate outputs as low as 1.21V . All
IN
OUT
necessary circuitry including oscillator, control logic,
comparators, error amplifiers, and reference are included
on die, keeping solution size minimal and saving external
components. High switching frequency allows a consid-
erable reduction in the size of external capacitors and
inductor. The topology is current mode for fast transient
response and good loop stability. A special high speed
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage.............................................................16V
Boost Voltage............................................................30V
Boost Pin Above Input Voltage..................................15V
SHDN Pin Voltage .......................................................7V
FB Pin Voltage..........................................................3.5V
FB Pin Current..........................................................1mA
SYNC Pin Voltage........................................................7V
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1
5秒后页面跳转
NTC热敏电阻与PTC热敏电阻的应用原理及应用范围
GTO与普通晶闸管相比为什么可以自关断？为什么普通晶闸管不能呢？从GTO原理、应用范围带你了解原因及推荐型号
LF353数据手册解读：特性、应用、封装、引脚说明、电气参数及替换型号推荐
A4950资料手册解读：特性、应用、封装、引脚功能、电气参数及代换型号
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
